Patent Publication Number: US-11645718-B2

Title: Distributed server side device architecture

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 16/418,330, filed May 21, 2019, now U.S. Pat. No. 10,937,100, which is a continuation of U.S. patent application Ser. No. 14/299,685, filed Jun. 9, 2014, now U.S. Pat. No. 10,346,919, which is a continuation of U.S. patent application Ser. No. 12/836,490, filed Jul. 14, 2010, now U.S. Pat. No. 8,781,946, the contents of each of which are fully incorporated herein by reference for all purposes. 
    
    
     FIELD 
     The present patent document relates to electronic trading. In particular, the present patent document relates to trading or exchanging tradeable objects, such as securities or commodities, within an organized electronic trading system. 
     BACKGROUND 
     An electronic trading system (“trading system”) may be used to electronically buy and sell tradeable objects. A tradeable object is simply anything that can be traded. For example, a tradeable object may be, but is not limited to, all types of traded products, such as, for example, stocks, options, bonds, futures, currency, contracts, warrants, funds, and commodities, as well as derivatives and collections of the foregoing. 
     Typically, a trading system includes an electronic exchange system. During the electronic trading process, a user (e.g., a trader using a trading device) submits a trade order for a tradeable object to an electronic exchange. The electronic exchange performs order matching, such that the trade order (or a portion of the trade order) is matched with one or more contra-side trade orders. For instance, a sell order is contra-side to a buy order with the same price. Similarly, a buy order is contra-side to a sell order with the same price. Unmatched trade orders are held in the exchange order book until a trade order is matched or removed from the order book. 
     In addition to matching trade orders, the electronic exchange is typically adapted to provide market data and trade confirmation data to subscribing trading devices. The market data may include information regarding the inside market, market depth, and previous or pending trades for a tradeable object. The inside market is the lowest sell price in the market and the highest buy price in the market at a particular point in time. Market depth refers to the number of trade orders that have been placed for a tradeable object at a particular price. 
     SUMMARY 
     The inventions described herein include, but are not limited to, various devices, systems, methods, and computer program products. Only a few, of the many, inventions are summarized in this section. 
     In an exemplary electronic trading system, a trading strategy device is disposed between a client device and the multiple (for example, two or more) server side devices, such that the trading strategy device is in communication with the client device and the multiple server side devices. Each server side device is adapted for working orders with one or more electronic exchange systems. Working an order may include, but is not limited to, generating a order, submitting an order, re-quoting an order, cancelling an order, sending an order, managing an order, or any combination thereof. 
     During operation, the trading strategy device receives one or more trading strategy orders from the client device. A trading strategy order defines, for example, one or more aspects of an instruction to buy or sell a trading strategy. By way of example, a trade order, such as a trading strategy order, may include, but does not have to include, configuration data, price data, quantity data, or any combination thereof. Configuration data is, for example, data that defines a tradeable object or trading strategy to be traded, the type of action to be performed (e.g., buy or sell), or other configuration data. A tradeable object is simply anything that can be traded. For example, a tradeable object may be, but is not limited to, all types of traded products, such as, for example, stocks, options, bonds, futures, currency, contracts, warrants, funds, and commodities, as well as derivatives and collections of the foregoing. A trading strategy defines, for example, a relationship between two or more tradeable objects to be traded. Price data, for example, defines a price or value for the tradeable object or trading strategy to be traded. Quantity data, for example, defines a number or quantity of a unit of a tradeable object or trading strategy to be traded. For example, quantity data may define the number of contracts to be bought or sold. 
     Once a trading strategy order has been received, the trading strategy device processes the data and identifies whether the trading strategy has multiple quoting legs. In the event that the trading strategy has multiple quoting legs, the trading strategy device generates and transmits multiple trading strategy child orders (“child orders”) to the one or more server side devices. Each child order is associated with a child trading strategy with a single quoting leg or a reduced number of quoting legs (for example, relative to the trading strategy order). Furthermore, the child trading strategies are the same or similar to the trading strategy associated with the trading strategy order, except for the number of legs marked as quoting legs. The child orders may be intelligently routed to the server side devices, for example, based on latency, physical location of one or more server side device, physical location of one or more exchange system, trader preference, exchange capabilities, other criteria, or any combination thereof. For example, a child order may be routed to a server side device located nearest or having the least latency to the electronic exchange system adapted to fill the child order. Based on the child orders, the server side devices generate quoting orders. The quoting orders may be submitted to the respective exchange systems. The respective exchange systems are capable of matching the quoting orders. 
     In an exemplary method, a computing device receives a trading strategy order for a trading strategy with multiple quoting legs. The computing device determines that the trading strategy order is for a trading strategy with multiple quoting legs. In response to determining that the trading strategy order is for a trading strategy with multiple quoting legs, the computing device generates multiple child orders. Each child order includes fewer quoting legs than the trading strategy order. The computing device may send the multiple child orders to one, two, or more server side devices. 
     In an exemplary computer program product, a computer readable medium has stored therein instructions executable by a processor. The instructions are executable to receive a trading strategy order associated with a trading strategy having multiple quoting legs; determine that the trading strategy is associated with a trading strategy having multiple quoting legs; generate multiple child orders; and submit the multiple child orders for matching. Each child order includes fewer quoting legs than the trading strategy order. 
     In another exemplary method, a trading strategy device receives a trading strategy order according to a trading strategy with multiple quoting legs. The trading strategy device splits the trading strategy order into multiple child orders. Each child order is associated with a child trading strategy having a single quoting leg. The child trading strategies are the same as the parent trading strategy except for the number of legs marked as quoting legs. The trading strategy device submits each of the multiple child orders to exchange systems adapted to fill the quoting legs in the child orders. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       It should be understood that the drawings illustrate examples. Accordingly, the various inventions, described herein, should not be to the arrangements and instrumentality shown in the drawings. Furthermore, drawings having like reference numerals indicate similar elements. 
         FIG.  1    illustrates an example of an electronic trading system. 
         FIG.  2    illustrates an example of a trading strategy. 
         FIGS.  3 A and  3 B  illustrate an example of an electronic trading process using an exemplary electronic trading system. 
         FIGS.  4 A and  4 B  illustrate another example of an electronic trading process using the electronic trading system of  FIG.  1   . 
         FIG.  5    illustrates an example of splitting a trading strategy order. 
         FIG.  6    illustrates another example of splitting a trading strategy order. 
         FIG.  7    illustrates yet another example of splitting a trading strategy order. 
         FIG.  8    illustrates an example of a trading strategy device. 
         FIG.  9    illustrates a flowchart of an exemplary method for trading in an electronic trading environment. 
         FIG.  10    illustrates a flowchart of an exemplary method for splitting an order for a trading strategy order. 
     
    
    
     DESCRIPTION 
     There are a number of embodiments described herein that relate to electronic trading. In particular, a number of embodiments relate to placing an order for a trading strategy, which may also be referred to as “a trading strategy order,” with multiple quoting legs using distributed server side device architecture. A trading strategy device, disposed between a client device and multiple server side devices, may split the trading strategy order into multiple child trading strategy orders. These child trading strategy orders may be referred to as “child orders.” Each child order is according to a child trading strategy having a single quoting leg or a reduced number of quoting legs (for example, relative to the initial trading strategy order). The child trading strategies are the same or substantially the same as the trading strategy in the trading strategy order except for the number of legs marked as quoting legs. Accordingly, each child order may be associated with a single quoting leg or fewer quoting legs than the trading strategy order. The trading strategy device may send the child orders to server side devices that are adapted to work orders with exchange systems. The server side devices receive the child orders, generate quoting order for each of the quoting legs in the child orders, and submit the quoting orders. The quoting orders are submitted and worked with the exchange systems. 
     Before explaining any further, it is worth noting again that the various inventions are not limited in their application to the details of design and the arrangement of the components set forth in the previous and following description or as illustrated in the drawings. Instead, the previous and following description and the drawings focus on presenting concepts of various inventions that may stand alone or be combined with each other or other embodiments. 
     I. Exemplary Electronic Trading Systems 
       FIG.  1    illustrates a block diagram of an electronic trading system (“trading system”)  100 . The trading system  100  includes one or more client system  110 , one or more server side device  120 , and one or more exchange system  140 . More specifically, as shown in  FIG.  1   , the trading system  100  includes, in addition to the client system  110 , a server side device  120   a , a server side device  120   b , a gateway  130   a , a gateway  130   b , an exchange system  140   a , and an exchange system  140   b . The client system  110  includes a client device  112  and a trading strategy device  114 . In other trading systems, additional, different, or fewer components are provided. For example, the system  100  may include “N” client systems, “N” server side devices, “N” gateways, “N” exchange systems, or any combination thereof. That is, the system  100  may be scaled to include multiple systems or components. 
     Client System 
     The client system  110  is in communication with the server side devices  120 , gateways  130 , exchange systems  140 , or a combination thereof, for example, via one or more communication networks  102 . For example, as shown in  FIG.  1   , the client system  110  is in communication with and coupled with the server side device  120   a  and gateway  130   a  via the communication network  102   a . Similarly, the client system  110  is in communication with and coupled with the server side device  120   b  and gateway  130   b  via the communication network  102   b . A communication network may include, for example, one or more communication buses, T 1  lines, T 3  lines, Integrated Services Digital Network (ISDN) lines, wired networks, wireless networks, point-of-presence networks, local networks, remote networks, the Internet, or any combination thereof. 
     The phrase “coupled with” may include directly connected to or indirectly connected through one or more intermediary components. Such intermediary components may include hardware (for example, servers, routers, gateways, and switches), software (for example, a trading application or a communication application), additional communication networks, or any combination thereof. 
     All or some of the client system  110  may be physically located at the same site as or a different site than one or more of the server side devices  120 , gateways  130 , exchange systems  140 , or a combination thereof. For example, the entire client system  110  may be physically located in an office building in Milwaukee, Wisconsin. However, the server side device  120   a , gateway  130   a , and exchange system  140   a  may be physically located in or around Chicago, Illinois and the server side device  120   b , gateway  130   b , and exchange system  140   b  may be physically located in Tokyo, Japan. In another example, which illustrates a distributed client system  110 , the client device  112  may be physically located in the office building in Milwaukee, Wisconsin and the trading strategy device  114  may be physically located in or around Chicago, Illinois. 
     As mentioned above, the client system  110  includes a client device  112  and a trading strategy device  114 . The client system  110  may include additional, different, or fewer components, such as servers, gateways, routers, switches, computers, client devices, trading strategy devices, applications, or other communication devices. For example, multiple client devices may be provided. Some or all of the multiple client devices may use the same trading strategy device (for example, there is a many-to-one ratio between client devices and trading strategy devices). In another example, multiple client devices are provided, however, each client device uses a single trading strategy device (for example, there is a one-to-one ratio between client devices and trading strategy devices). 
     Client Device 
     The client device  112  may be a hand-held device, laptop, desktop computer, server, personal computer, communication endpoint, electronic trading workstation, a computing device, an electronic trading workstation, a portable trading device, an algorithmic trading or “black-box” system, an embedded trading system, an automated trading tool, or any combination thereof. The client device  112  may be owned, operated, controlled, programmed by, configured by, or otherwise used by a user. The term “user” may include, but is not limited to, a human (for example, a trader) or an electronic trading device (for example, including a processor and memory or an algorithmic trading system). One or more users may be involved in the ownership, operation, control, programming, configuration or other use. 
     The client device  112  may receive, display, or both receive and display market data. Market data may be received from an exchange system, such as exchange system  140   a  or exchange system  140   b . Market data may include market information, which commonly includes information about one or more tradeable objects. Market data may also include quote data (for example, bid/ask price data, bid/ask quantity data, market depth data), trade data (for example, last sale data, last quantity data, volume data), confirmation data (for example, fill confirmations, trade confirmations), other exchange related data, or any combination thereof. Market data may include, but is not limited to, prices for various tradeable objects available for trading, the volume of bids for a tradeable object at any given instant, trade confirmations indicating what trades have occurred at what quantities and/or prices, or fill confirmations indicating that a trade was filled. 
     Market data may also include data that represents the inside market, for example. The inside market is the lowest sell or offer price (also referred to as the “best ask”) and the highest buy or bid price (also referred to as the “best bid”) at a particular point in time. Market data may also include market depth data. Market depth refers to the number of trade orders that have been placed for a tradeable object at a certain price at a specific time. Market depth may change as trade orders, either from the client system  110  or a different system, are received by the exchange system  140 . In certain embodiments, market depth is provided for all price levels. However, in other embodiments, market depth is provided for less than all price levels. Market data may also include information such as the last traded price (LTP), the last traded quantity (LTQ), and order fill information. 
     The client device  112  may include one or more input. An input may be, for example, an input device or a network interface, or both. The input may be adapted to receive market data, user input data, both market data and user input data, other trading data (for example, identifications, passwords, algorithms), or a combination thereof. User input data may include data received from a user, such as a definition of one or more tradeable objects. 
     Exemplary input devices include, for example, a mouse, keyboard, track ball, touch screen, joystick, touch pad, user interface, microphone, button, knob, slider, combinations thereof, or other now known or later developed user input device. For example, an input device may be a user interface. The user interface may be an application programming interface that allows a user to interact with the trading screen. The user interface may be associated with one or more display devices for presenting a text-based or graphical interface of a trading application to a user. A display device may be a computer monitor, hand-held device display, projector, and/or television. In an example, the user interface may display market data. In another example, the user interface may provide the user with an easier to use system for programming a trading strategy using blocks and connection lines to assemble an automated trading strategy, without having to understand source code. In yet another example, the user interface may be used by the user to specify or review parameters for an order using a trading application. A network interface may include hard-wired or wireless network interfaces. A universal asynchronous receiver/transmitter (UART), a parallel digital interface, a software interface, Ethernet, or any combination of known or later developed software and hardware interfaces may be used. The network interface may be linked to various types of networks, including a local area network (LAN), a wide area network (WAN), an intranet, a virtual private network (VPN), and the Internet. 
     The client device  112  may be used to buy or sell one or more tradeable objects. A tradeable object may be “real” or “synthetic.” A real tradeable object is a product that is listed by an exchange. A synthetic tradeable object is a product that is defined by the user and is not listed by an exchange. For example, a synthetic tradeable object may include a combination of real (or other synthetic) products such as a synthetic spread created by a trader utilizing a client device  112 . A synthetic tradeable object may be an implied, for example, a tradeable object implied from one or more real tradeable object. 
     The client device  112  may include one or more electronic computing platforms. A common electronic computing platform includes a processor and a computer readable medium that stores instructions that may be executed by the processor. Other electronic computing platforms may be used, such as computing devices or processing components. 
     For trading purposes, the client device  112  may also include one or more trading applications. The trading application(s) may, for example, process market data by arranging and displaying the market data in trading and charting windows. For example, the trading application(s) may also allow a user to define a tradeable object and submit an order for the defined tradeable object. This processing may be based on user preferences. The one or more trading applications may include one or more instructions stored on a computer readable medium. The electronic computing platform may execute the trading application to perform one or more of the functions described, illustrated, or shown herein. 
     The trading application(s) may include an automated trading tool. As an example, the client device  112  may be a workstation running a copy of X_TRADER®, an electronic trading platform provided by Trading Technologies International, Inc. of Chicago, Illinois. As another example, the client device  112  may be a server running an automated trading tool, such as Autospreader®, which is also provided by Trading Technologies International, Inc. 
     Trading Strategy Device 
     The trading strategy device  114  may be a hand-held device, laptop, desktop computer, server, personal computer, endpoint, electronic trading workstation, a computing device, an electronic trading workstation, a portable trading device, an algorithmic trading or “black-box” system, an embedded trading system, an automated trading tool, or any combination thereof. The trading strategy device  114  may be referred to as a management device, monitoring device, splitting device, or order entry device, for example. 
     The trading strategy device  114  may be physically located at the same site as or a different site than the client device  112 . For example, the trading strategy device  114  may be physically located in the same office or building as the client device  112 . As shown in  FIG.  1   , the client device  112  and trading strategy device  114  may be different devices. However, in other examples, the client device  112  and trading strategy device  114  may be the same device or devices operating as a single unit. For example, the trading strategy device  114  may be integrated into the client device  112 . The phrase “integrated into” may include using the same processor(s), memory, or both processor(s) and memory, having the same housing or connected housings, or otherwise joined or operating together. 
     However, the physical location of the trading strategy device  114  may vary depending on the trading system  100 . For example, in various embodiments, the trading strategy device  114  is physically located at the same site as or a different site than one or more of the server side devices  120 , gateways  130 , exchange systems  140 , or a combination thereof. For instances, the trading strategy device  114  may be integrated into a server side device  120 . In another example, the trading strategy device  114  may be integrated into a gateway  130  adapted for communicating with an exchange system  140 . 
     The trading strategy device  114  may include one or more electronic computing platforms. For electronic trading purposes, the trading strategy device  114  may also include one or more trading applications. The one or more electronic computing platforms may be adapted to execute the one or more trading applications, such that the client device  112  performs one or more of the functions described, illustrated, or shown herein. For example, the trading application can be executed to perform, for example, one, some, or all of acts shown in  FIGS.  4 A and  4 B ,  FIG.  9   , or  FIG.  10   . 
     The trading strategy device  114  may be adapted to transmit and receive one or more trade orders. For example, the trading strategy device  114  may receive a trading strategy order from the client device  112  and transmit one or more child trading strategy orders to the server side devices  120 . 
     A trade order, such as a trading strategy order or a child trading strategy order, includes any of configuration data, price data, quantity data, or any combination thereof. The trade order may include all the information needed to place a quoting order, less than all the information needed to place a quoting order, more than all the information needed to place a quoting order, or a combination thereof. The amount of information in a trade order may depend on, for example, the component receiving the information, the amount of information needed to place a quoting order, the information that was previously sent, a combination thereof, or other consideration. 
     For example, in some embodiments, a trade order includes price data and quantity data, but not necessarily configuration data. That is, for instance, configuration data may be sent ahead of, or along with, price and quantity data that is sent to the trading strategy device or the server side device for the first time. The configuration data may be stored, for example, at the trading strategy device or the server side device. With the configuration data already at the trading strategy device or the server side device, subsequent incoming price and quantity data may be combined or used with the configuration data. If a change in the configuration data occurs, then updated configuration data may be sent ahead of, or along with, price and quantity data of the trade order following the change. In other embodiments, a trade order includes price data, but not necessarily quantity data. That is, for instance, price data may be sent ahead of, along with, or after quantity data. 
     The trading strategy device  114  is adapted to manage one or more client devices  112 . For example, the trading strategy device  114  can be coupled with multiple client devices  112 . The client devices  112  may send orders to the trading strategy device  114 . The trading strategy device  114  may be adapted to receive the orders and manage submission of the orders. Management of the orders may include working, handling, directing, governing, controlling, attempting to accomplish, or succeeding in accomplishing the submission of the orders. As will be described in more detail below, management may also include splitting an order received from the client device  112 . 
     Server Side Devices 
     The server side devices  120  may be servers, gateways, personal computers, other now known or later developed communication device, or a combination thereof. For example, a server side device may be a server running an automated trading tool, such as Autospreader® or Autotrader™, both of which are provided by Trading Technologies International, Inc. An automated trading tool may be controlled using the client device  112 , even though the server may be physically located at, in, around, or near the exchange systems  130 . 
     For communication purposes, the server side device  120   a  is coupled with the trading strategy device  114  and the exchange system  140   a . The server side device  120   b  is coupled with the trading strategy device  114  and the exchange system  140   b . For example, the server side device  120  may include or be coupled with a gateway that is in communication with an exchange system  140 . The gateway may perform protocol translation. 
     The server side devices  120  are physically located at, near, or in the exchange systems  130 . A server side device may be placed at, near, or in each exchange system where a quoting order will be worked. That is, a distributed server side device architecture is a system or environment where two or more server side devices are distributed among different exchange systems. The server side devices are adapted for working quoting orders with the exchange systems, such that a single server side device does not have to work quoting orders at multiple exchange systems. 
     The server side device  120  may be an automated trading server running the automated trading tool Autospreader®, provided by Trading Technologies International, Inc. An automated trading server may be in communication with an exchange system  140  via a gateway, such as a Financial Information eXchange (FIX) gateway, or may be adapted to communicate directly with the exchange system. An automated trading server and FIX gateway may be located at a site near the exchange system, for example, to increase speed and efficiency of electronic trading. 
     A server side device  120  may receive an order to buy and sell one or more tradeable object from the trading strategy device  114  and submit the order to an exchange system  140  adapted to fill the order. Accordingly, a server side device may be adapted to work an order with an exchange system. Working an order may include submitting an order, re-quoting the order, cancelling the order, sending a hedge order, managing an outstanding order, or any combination thereof. Outstanding orders are orders that have been submitted to an exchange system but have not been filled. That is, the exchange system is attempting to match all or some of the outstanding order with a contra-side order. Managing an outstanding order may include, for example, reporting back to the client device, tracking market updates, or otherwise performing one or more trading functions. 
     Exchange Systems 
     The exchange systems  140  may be owned, operated, controlled, or used by the same or different financial exchanges (for example, the Chicago Mercantile Exchange and the Chicago Board of Trade). As discussed in more detail below, the exchange systems may be used to receive and fill orders. The exchange systems  140  may be part of the same exchange or a different exchange. 
     An exchange system is adapted to match orders. For example, an exchange system may include a matching engine. Matching engines may be adapted to match orders. In particular, the matching engines are adapted to match bid and offer prices. Matching engines may be implemented with software that executes one or more algorithms for matching bids and offers. The exchange systems  130  may be adapted to provide fill confirmations when an order is filled. The fill confirmations may be provided to server side devices  120 , for example. 
     The exchange system  130  may include additional, different, or fewer components. For example, a trade database may be included to store information identifying trades and descriptions of trades. A trade database may store information identifying the time that a trade took place and the contract price. An order book module may be included to compute or otherwise determine current bid and offer prices. A market data module may be included to collect market data and prepare the data for transmission to users. A risk management module may be included to compute and determine a user&#39;s risk utilization in relation to the user&#39;s defined risk thresholds. An order processing module may be included to decompose variable defined derivative product and aggregate order types for processing by order book module and the match engine. 
     The exchange systems  130  may also be adapted to provide market data. The market data may be provided to the client device  112 , for example, via one or more gateways. In another example, the exchange systems  130  may provide market updates. Market updates may include changes in a market (for example, changes in price), partial fills, or other updates that may impact outstanding orders. Market updates may be provided, for example, to server side devices  120  or other devices managing outstanding orders. 
     Once an order is filled, the exchange systems  130  may confirm the fill, for example, by sending a fill confirmation. The fill confirmation may be sent to a server side device  120 . For example, in the event that the exchange system  140   a  matches an order, a fill confirmation may be sent to the server side device  120   a . The fill confirmation may then be sent to other components. For example, the fill confirmation may be transmitted to the client device  112  and/or the trading strategy device  114 . Alternatively, or additionally, the fill confirmation may be sent to the trading strategy device  114  or client device  112 . 
     While not shown for the sake of clarity, the system  100  may include other devices that are specific to the communications architecture such as middleware, firewalls, hubs, switches, routers, gateways, exchange-specific communication equipment, modems, security managers, and/or encryption/decryption devices. 
     II. Strategy Trading 
     In addition to buying and/or selling a single tradeable object, a user can utilize the client device  112  to trade more than one tradeable object according to a trading strategy. A trading strategy defines a relationship between two or more tradeable objects to be traded. Each tradeable object being traded as part of a trading strategy may be referred to as a leg or outright market of the trading strategy. One common trading strategy is a spread and trading according to a spread is referred to as spread trading. Spread trading attempts to capitalize on changes or movements in the relationships between the tradeable object in the trading strategy. 
     When the trading strategy is to be bought, the definition for the trading strategy specifies which tradeable object corresponding to each leg should be bought or sold. Similarly, when the trading strategy is to be sold, the definition specifies which tradeable objects corresponding to each leg should be bought or sold. For example, a trading strategy may be defined such that buying the trading strategy involves buying one unit of a first tradeable object for leg A and selling one unit of a second tradeable object for leg B. Selling the trading strategy typically involves performing the opposite actions for each leg. 
     In addition, the definition for the trading strategy may specify a spread ratio associated with each leg of the trading strategy. The spread ratio may also be referred to as an order size for the leg. The spread ratio indicates the quantity of each leg in relation to the other legs. For example, a trading strategy may be defined such that buying the trading strategy involves buying 2 units of a first tradeable object for leg A and selling 3 units of a second tradeable object for leg B. The sign of the spread ratio may be used to indicate whether the leg is to be bought (the spread ratio is positive) or sold (the spread ratio is negative) when buying the trading strategy. In the example above, the spread ratio associated with leg A would be “2” and the spread ratio associated with leg B would be “−3.” In some instances, the spread ratio may be implied or implicit. For example, the spread ratio for a leg of a trading strategy may not be explicitly specified, but rather implied or defaulted to be “1” or “−1.” 
     Additionally, the definition for the trading strategy may specify a multiplier associated with each leg of the trading strategy. The multiplier is used to adjust the price of the particular leg for determining the price of the spread. The multiplier for each leg may be the same as the spread ratio. For example, in the example above, the multiplier associated with leg A may be “2” and the multiplier associated with leg B may be “−3,” both of which match the corresponding spread ratio for each leg. Alternatively, the multiplier associated with one or more legs may be different than the corresponding spread ratios for those legs. For example, the values for the multipliers may be selected to convert the prices for the legs into a common currency. 
     The following discussion assumes that the spread ratio and multipliers for each leg are the same, unless otherwise indicated. In addition, the following discussion assumes that the signs for the spread ratio and the multipliers for a particular leg are the same and, if not, the sign for the multiplier is used to determine which side of the trading strategy a particular leg is on. 
       FIG.  2    illustrates a block diagram of an exemplary trading strategy  210 . The trading strategy  210  includes “N” legs  220 . A leg refers to a tradeable object, an order for a tradeable object, a potential order for a tradeable object, or a portion of a trade associated with a tradeable object. As such, a leg may also be referred to as an outright. 
     The trading strategy  210  defines the relationship between the tradeable objects  222  for each of the legs  220  using the spread ratios  224  and multipliers  226  associated with each of the legs  220 . Once defined, the tradeable objects  222  in the trading strategy  210  may then be traded together according to the defined relationship. 
     The following discussion assumes that the spread ratio  224  and multipliers  226  for each leg are the same, unless otherwise indicated. In addition, the following discussion assumes that the signs for the spread ratio  224  and the multipliers  226  for a particular leg are the same and, if not, the sign for the multiplier  226  is used to determine which side of the trading strategy a particular leg is on. 
     In an illustration, which will be referred to herein as “the illustration above,” the trading strategy  210  is a spread with two legs  220 . Leg 1 is for tradeable object A and Leg 2 is for tradeable object B. The spread ratios  224  and multipliers  226  associated with Legs 1 and 2 may be 1” and “−1,” respectively. The spread  210  may be defined such that when the spread  210  is bought, 1 unit of tradeable object A is bought (positive spread ratio, same direction as the spread) and 1 unit of tradeable object B is sold (negative spread ratio, opposite direction of the spread). In spread trading, the opposite of the definition generally applies. For example, when the definition for the spread  210  is such that when the spread  210  is sold, 1 unit of tradeable object A is sold (positive spread ratio, same direction as the spread) and 1 unit of tradeable object B is bought (negative spread ratio, opposite direction of the spread). 
     The price for the trading strategy  210  may be determined based on the definition of the trading strategy. The price for the trading strategy  210  is typically the sum of price of the tradeable object  222  multiplied by the multiplier  226  for each of the legs  220  of the trading strategy  210 . 
     In the illustration above, if a user believes that tradeable object A typically has a price 10 greater than tradeable object B, then the user may want to buy the spread whenever the difference in price between tradeable objects A and B is less than 10 and sell the spread whenever the difference is greater than 10. As an example, tradeable object A may be at a price of 45 and tradeable object B may be at a price of 40. The current spread price would then be (1)(45)+(−1)(40)=5, which is less than the typical spread of 10. Thus, the trader may buy 1 unit of the spread, which results in buying 1 unit of tradeable object A at a price of 45 and selling 1 unit of tradeable object B at 40. At some later time, the typical price difference may be restored and the price of tradeable object A is 42 and the price of tradeable object B is 32. At this point, the price of the spread is now 10. Accordingly, 1 unit of the spread may be sold to close out the position (for example, sell 1 unit of tradeable object A and buy 1 unit of tradeable object B), and profit on the total transaction. In particular, while the trader bought tradeable object A at a price of 45 and sold at 42, losing 3, the trader sold tradeable object B at a price of 40 and bought at 32, for a profit of 8. Thus, the user made 5 on the buying and selling of the spread. 
     The illustration above assumes that there is sufficient liquidity and stability that the tradeable objects can be bought and sold at the market price at approximately the desired times. This allows the trader to achieve the desired price for the spread  210 . However, more generally, a user determines a desired price at which to buy or sell a particular trading strategy. Using an automated trading tool, for example, the user may attempt to achieve that desired price by buying and selling the legs at appropriate prices. For example, when a user enters an order to buy or sell the trading strategy  210  at a desired price, the automated trading tool may automatically place an order, which may be referred to as quoting an order, for one of the tradeable objects  222  of the trading strategy  210  to achieve the desired price for the trading strategy (also referred to as a desired strategy price, desired spread price, and/or a target price). 
     The leg for which the order is placed may be referred to as the quoting leg. The other leg may be referred to as a lean leg or a hedge leg. The price that the quoting leg is quoted at is based on the best price that an order could be filled at in the hedge leg. The best price is typically the best bid price when selling and the best ask price when buying. The best price in the hedge leg is also known as the leaned on price, lean price, or lean level. As the leaned on price changes, the price for the order in the quoting leg may also change to maintain the desired strategy price. When the quoting leg is filled, an order in the hedge leg may be submitted to complete the strategy. This order may be referred to as an offsetting or hedging order and is typically quoted at the leaned on price. If the order at the leaned on price is not filled (or filled sufficiently to achieve the desired strategy price), then the trader is said to be “legged up” because the trader has not achieved the desired strategy relationship according to the trading strategy definition. 
     Depending on the trading strategy, the price of a quoted leg may be based on all or less than all of the other legs. As another example, the order parameters of an order in a quoted leg may lean on other types of market conditions in the other legs such as the last traded price (LTP), the last traded quantity (LTQ), a theoretical value, multiple quantities such as quantities closer to the inside market, or some other reference point. 
     A trading strategy may be quoted in multiple (for example, two or more, some, or all) legs. In such situations, each quoted leg still leans on the other legs, even if the other legs are also quoting legs. When one of the quoted legs is filled, the orders in the other quoted legs are typically cancelled and then appropriate hedge orders are placed based on the leaned on prices that the filled leg was based on. 
     When buying and selling trading strategies, users generally desire to achieve the target price for the trading strategy. That is, traders want to buy and sell, according to the definition of the trading strategy, the tradeable objects of the trading strategy so as to result in a particular strategy price being realized. 
     To achieve the target price for the trading strategy, as markets fluctuate, there may be a need to re-quote one or more of the quoting legs based on a fluctuating price of a hedge leg. For example, in the event that the price of a hedge leg being worked at a first exchange fluctuates, the order for a quoting leg at a second exchange may need to be cancelled and replaced with a replacement order having a replacement quoting leg definition. The replacement quoting leg definition generally sets forth a new price for the quoting leg based on the new price for the hedge leg. 
       FIG.  3 A  illustrates an example of working an order for a quoting leg based on a fluctuating price of a hedge leg. A trading system  300 , which may include one or more components of the system  100  of  FIG.  1   , may be used to work the order. The trading system  300  includes a server side device  120   a  at, near, or in the exchange system  140   a . However, a server side device is not located at, near, or in the exchange system  140   b . Instead, the server side device  120   a  is adapted to work quoting orders at both the exchange system  140   a  and the exchange system  140   b . The trading system  300  does not include a trading strategy device  114 . Accordingly, the client device  112  submits orders to the server side device  120   a.    
     The system  300  is configured so that a single server side device  120   a  is used to work the quoting orders. This configuration allows the server side device  120   a  to act as a central hub for all of the quoting orders. That is, the server side device  120   a  manages each of the orders based on the status or changes to orders at each of the exchange systems. 
     The trading system  300  is adapted to facilitate the electronic trading of an order to buy or sell according to a trading strategy, which is referred to as a trading strategy order  310 . In this example, both leg A and leg B are marked as quoting legs. As shown in  FIG.  3 A , the server side device  120   a  receives the trading strategy order  310  from the client device  112 . The trading strategy order  310  is associated with a trading strategy including leg A and leg B. Leg A is associated with tradeable object A, which is electronically traded at exchange system  140   a , and leg B is associated with tradeable object B, which is electronically traded at exchange system  140   b . Exchange system  140   a  is a different than exchange system  140   b.    
     Once the trading strategy order  310  is received, the server side device  120   a  submits a quoting order  312  to the exchange system  140   a . The quoting order  312  may be an order, for example, configured according to a protocol required by exchange system  140   b , for leg A. Similarly, the server side device  120   a  submits a quoting order  314  to the exchange system  140   b . The quoting order  314  may be an order, for example, configured according to a protocol required by exchange system  140   b , for leg B. The quoting order  312  leans on tradeable object B being traded at exchange system  140   b . Similarly, quoting order  314  leans on tradeable object A being traded at exchange system  140   a.    
     Upon receiving the quoting orders  312 ,  314 , the exchange systems  130   a ,  130   b  confirm receipt of the quoting orders  312 ,  314  by transmitting order confirmations  316 ,  318  back to the server side device  120   a . Furthermore, the exchange systems begin attempting to match the quoting orders with contra-side orders that have been received or will be received by the exchange systems. 
     A market update  320  is transmitted to the server side device  120   a  from the exchange system  140   a . The market update  320  includes a price change related to the trading strategy. For example, the market update indicates that the price for tradeable object A, which leg B is leaning on, has changed at the exchange system  140   a . Accordingly, to achieve the target price for the trading strategy, as originally defined by the client device, the server side device  120   a  submits a change order  322  to the exchange system  140   b . The change order  322  changes the price associated with a quoting order in the order book. The adjusted price value is based on the change in price indicated in the market update  320 . The exchange system  140   b  confirms receipt of the change order  322  by sending a change order confirmation  324  to the server side device  120   a . Note that in the event that the exchange system  140   b  does not support a change order, the server side device  120   a  may send a cancel/replace order or two separate commands to cancel and replace the order in the order book, for example. 
     Prior to receiving the change order confirmation  324 , the server side device  120   a  receives another market update  326 , for example, indicating another price change impacting the pricing of the trading strategy. However, in some instances, until the change order confirmation  324  is received (for example, during the time period  328 ), the server side device  120   a  is unable to send a change order  330 . That is, the change order  330  should not be sent because the server side device  120   a  has not received an identifier for the order associated with the change order  322 . The exchange system  140   b  places this identifier in the change order confirmation  324  so that the server side device  120   a  can reference the correct order when changing, replacing, or cancelling the order. Without this identifier, the server side device  120   a  is unable to properly reference the order. Accordingly, the exchange system  140   b  will be unable to identify the correct order and take appropriate action. Furthermore, in other instances, the server side device  120   a  must wait for the change order confirmation  324  to ensure that the order at the exchange was properly received and placed in the order book. Plus, there is the possibility that the change was filled. This would cause the trader to be at risk of being double filled, for example, in the event that the change order  330  was sent prior to receiving the change order confirmation. 
     During the time period  328 , the server side device  120   a  is aware that the market has changed but is unable to place a change order. It may be advantageous to reduce this time period as much as possible, so that the exchange system  140   b  receives the change order  330  as fast as possible. 
     Furthermore, as shown in  FIG.  3 B , the system  300  leaves the trader at risk of being legged, double filled, or both legged and double-filled for an extended period of time. The system  300  is the same or similar as the system  300  of  FIG.  3 A . However, instead of the market update  326 , prior to receiving the change order confirmation  324 , the server side device  120   a  receives a fill confirmation  332 . The fill confirmation  332  indicates that exchange system  140   a  matched the quoting order  312 . In response to receiving the fill confirmation  332 , the server side device  120   a  attempts to send a hedge order  336  and a cancel order  338  to the exchange system  140   b . The hedge order  336  places an order for the tradeable object associated with the leg that quoting leg A was leaning on. The cancel order  340  cancels the replacement order for the tradeable object in quoting leg B (for example, the order that was placed as a result of the change order  322 ). 
     The hedge order  336  can be placed at anytime, for example, subsequent to a fill. For example, as shown in  FIG.  3 B , the hedge order  336  may be placed after receiving the fill confirmation  332  and prior to receiving the change order confirmation  324 . However, in other embodiments, the hedge order  336  may not be placed until the change order  338  is received and the cancel order  338  is transmitted. 
     However, the server side device  120   a  is unable to place the cancel order  338  until the server side device  120   a  receives the change order confirmation  324 , since the server side device  120   a  needs the confirmation information in the change order confirmation  324  to be able to cancel the change order  322 . That is, the server side device  120   a  is unable to place the cancel order  338  during the time period  334  because the server side device  120   a  is unable to identify the change order  322  at the exchange  130   b  without the identifier, as discussed above. This may result in a delay in placing the hedge order  330 , the cancel order  340 , or both the hedge order  330  and cancel order  340 . As shown in  FIG.  3 B , even though the hedge order  336  may not be delayed, the cancel order  338  might be delayed and as a result the user might get double filled or legged. 
     The risk of being legged arises when the prices needed to obtain the trading strategy are no longer available. For example, a trader is considered to be legged after being filled in leg A and is unable to be filled in leg B at a price that satisfies the trading strategy price. For example, assume that the trading strategy price is “5” and leg A was filled at a price of “10.” Since the trading strategy price is equivalent to the price of leg A minus the price of leg B, the trader would need to obtain a price of “5” for leg B. However, if the market moves against the trader (e.g., the price of leg B drops from “5” to “4”, after leg A is filled or while leg A is being filled, the trader is considered to have been legged because the trading strategy price of “5” is no longer available. Furthermore, a trader is at risk of being double filled when both the change order  322  and the hedge order  336  are being worked at the exchange system  140   b . That is, to obtain the trading strategy price, a hedge order  336  is sent to the exchange system  140   b  when the fill confirmation  326  is received. However, since the server side device  120   a  has yet to receive the change order confirmation  324 , the change order  322  has not been cancelled. Accordingly, two orders are being worked at exchange system  140   b . This leaves the trader at risk of being double filled. 
     III. Exemplary Electronic Trading Processes 
       FIG.  4 A  illustrates an exemplary trading process using the trading system  100  of  FIG.  1   . The client device  112  is adapted to receive a trading strategy definition. The trading strategy definition defines a trading strategy to be bought or sold. For example, the trading strategy definition may include any of price data, quantity data, configuration data, or any combination thereof. The trading strategy definition may be received from the client device  112 . For example, the trading strategy definition may be automatically or manually input by a trader into the client device. In another example, all or some of the trading strategy definition may be received at the same or different times. For example, a trader may define a trading strategy (e.g., define a spread) and send the configuration data to the trading strategy device  114  or the server side devices. Then, during a trading session, the price and quantity information may be defined, for instance, by selecting a price and quantity along a price axis. 
     The client device  112  may generate a trading strategy order  410 , for example, according to the trading strategy definition. Once generated, the client device  112  may send the trading strategy order  410  to the trading strategy device  114 . The trading strategy order  410  may be sent at the request from a user (for example, by clicking a “Send” button) or automatically. For example, a trader may utilize an electronic trading workstation to place the trading strategy order. As another example, an automated trading tool may calculate one or more parameters for an order and automatically send the order. In some instances, an automated trading tool may prepare the order to be sent but not actually send it without confirmation from the user. 
     In some embodiments, the client device  112  may designate the trading strategy device  114  as the recipient of the trading strategy order  410 , for example, using an address or communication path allocated to the trading strategy device  114 . However, in other embodiments, the trading strategy order  410  may be sent to another device that routes the trading strategy order  410  to the trading strategy device  114 . 
     The trading strategy order  410  may be associated with a trading strategy having multiple quoting legs. For example, the trading strategy order  410  may be associated with a spread having leg A and leg B. Leg A is associated with tradeable object A traded at exchange system  140   a  and leg B is associated with tradable object B traded at exchange system  140   b . Both leg A and leg B are marked as quoting legs, for example, when the trading strategy is defined using the client device  112 . Accordingly, leg A leans on tradeable object B and leg B leans on tradeable object A. Additional quoting legs and/or non-quoting legs may be defined in the trading strategy associated with the trading strategy order  410 . The exchange system  140   a  may be different than the exchange system  140   b.    
     The trading strategy device  114  may receive the trading strategy order  410 . Receiving the trading strategy order  410  may include receiving the trading strategy order  410 , requesting, retrieving, or otherwise obtaining the trading strategy order  410 . 
     In various embodiments, as shown in  FIG.  4 A , the trading strategy device  114  may be disposed between the client device  112  and one, some, or all of the server side devices  120 . Accordingly, the trading strategy device  114  may receive the trading strategy order  410  before or at the same time as one, some, or all of the server side devices  120 . For instance, if the trading strategy device  114  is disposed in the client system  110 , the trading strategy device  114  may receive the trading strategy order prior to the server side device  120   a  and server side device  120   b . However, in the event that the trading strategy device  114  is part of the server side device  120   a , the trading strategy device  114  may receive the trading strategy order  410  before the server side device  120   b.    
     Once received, the trading strategy device  114  may split  412  the trading strategy order  410  into multiple child trading strategy orders  414 ,  416 . Accordingly, the trading strategy order  410  may be referred to as, for example, an initial, original, received, or parent order. The child orders  414 ,  416  may be referred to as, for example, sub, split, or derivative orders. 
     Splitting  412  the trading strategy order  410  may include, as discussed in more detail below, identifying a trading strategy with multiple quoting legs, defining multiple child trading strategies, generating multiple child trading strategy orders, submitting the multiple child trading strategy orders, or any combination thereof. Splitting  412  is not limited to those acts described above. Additional, different, or fewer acts may be performed when splitting a trading strategy order. 
     The trading strategy device  114  is adapted to identify a trading strategy having multiple quoting legs. Identifying a trading strategy order  410  associated with a trading strategy having multiple quoting legs may include recognizing, calculating, or otherwise determining that the trading strategy includes multiple legs marked as quoting legs. For instance, the trading strategy device  114  may analyze each leg in the trading strategy order  410 , determine whether each leg is a quoting leg or a non-quoting leg, and count the number of legs that are marked as quoting legs. In another example, the client device  112 , for example, when generating the trading strategy order, indicates the number of quoting legs in a field designated for indicating the number of quoting legs in trading strategy order  410 . Accordingly, the trading strategy device  114  may read and analyze that field. 
     In response to identifying a trading strategy order  410  associated with a trading strategy including multiple quoting legs, the trading strategy device  114  may define multiple child trading strategies. The child trading strategies are the same as the trading strategy associated with the trading strategy order  410 , except for the number of legs that are being quoted. That is, the number of legs marked as quoting legs in the child trading strategies is different than (e.g., less than) the number of legs marked as quoting legs in the trading strategy associated with the trading strategy order  410 . For instance, the child trading strategies may include a single quoting leg or a reduced number of quoting legs (for example, relative to the number of quoting legs in the trading strategy order  410 ). The child trading strategies are associated with tradeable objects. For example, in  FIG.  4 A , a first child trading strategy is associated with tradeable object A and a second child trading strategy is associated with tradeable object B. In the first child trading strategy, leg A is marked as a quoting leg. Similarly, in the second child trading strategy, leg B is marked as a quoting leg. 
     The number of child trading strategies that are defined depends, for example, on the number of quoting legs in the trading strategy order  410 . Each child trading strategy may have a single quoting leg. In another example, multiple quoting legs may be included in a single child trading strategy. Quoting legs may be grouped based on the exchange system adapted to match the quoting legs. For example, quoting legs that are traded at the same exchange system may be included in the same child trading strategy. However, even when grouped together, the number of quoting legs in the child order is less than the number of quoting legs in the trading strategy order  410 . 
     It should be understood that the present system also supports working a trading strategy order without splitting the trading strategy order. For example, the trading strategy device  114  may receive a trading strategy order  410  for a trading strategy with multiple quoting legs and may send the trading strategy order  410  to the server side device  120   a . That is, the trading strategy device  114  may determine whether or not to split the trading strategy order  410 , for example, based on latency, physical location of one or more exchange systems, one or more other considerations that optimize the trading environment, or a combination thereof. 
     Each child trading strategy has zero, one, or more quoting legs. The number of quoting legs in the child trading strategies is less than the number of quoting legs in the trading strategy of the initial order. In an example, if the trading strategy, as specified in the trading strategy order  410 , includes two quoting legs, the trading strategy device  114  may define a first trading strategy having a single quoting leg and a second trading strategy having a single quoting leg. In another example, if the trading strategy, as specified in the trading strategy order  410 , includes twenty-two quoting legs, the trading strategy device  114  may define a first trading strategy having a single quoting leg; a second trading strategy having a single quoting leg; and a third trading strategy having twenty quoting legs. 
     Once one, some, or all the child trading strategies are defined, the trading strategy device  114  generates multiple child trading strategy orders (“child orders”)  414 ,  416 . Each child order  414 ,  416  may include a child trading strategy including a single quoting leg or a reduced number of quoting legs (for example, relative to the number of quoting legs in the trading strategy order received from the client device  112 ). Any number (for example, two or more) of child orders may be generated, for example, depending on the complexity of the trading strategy in the trading strategy order  410 . For instance, the trading strategy device  114  may generate a child order for each quoted leg in the trading strategy associated with the trading strategy order  410 . In another example, the trading strategy device  114  may minimize the number of child orders that need to be generated, for example, by grouping child trading strategies. The legs or trading strategies may be grouped, for example, based on latency, physical location of the server side devices or exchange systems or gateways, trader preference, exchange capabilities, other now known or later developed criteria, or any combination thereof. This may reduce the volume of child orders being transmitted through the electronic trading system  100 . 
     All, some, one, or none of the legs in the child orders may be quoting legs. The child orders may have any number of non-quoting legs and/or quoting legs. The number of child orders may depend on, for example, the number of legs in the trading strategy, the number of quoting legs, latency, capabilities of the exchanges, or any combination thereof. The number of non-quoting legs and quoting legs in the child orders may be the same or different. The number of non-quoting legs and quoting legs may or may not vary between child orders. For example, in the child orders, quoting legs may be mixed with other quoting legs or non-quoting legs. However, a single non-quoting leg and quoting leg may, alternatively or additionally, stand alone. The trading strategy device  114  determines the number of child orders, the number of non-quoting legs in each child order, the number of quoting legs in each child order, or a combination thereof based on, for example, latency in submitting the child orders. The trading strategy device  114  may minimize the time for submitting the child orders. 
       FIGS.  5 - 7    illustrate examples of splitting an order including multiple quoting legs. The examples shown in  FIGS.  5 - 7    are non-exhaustive examples. As will be explained in more detail below,  FIG.  5    illustrates splitting a trading strategy associated with a trading strategy having two legs into two child orders, where each child order includes a single quoting leg.  FIG.  6    illustrates splitting a trading strategy associated with a trading strategy having four legs into two child orders, where each child order includes a single quoting leg.  FIG.  7    illustrates splitting a trading strategy associated with a trading strategy having five legs into two child orders, where one of the child orders includes multiple quoting legs and the other child order includes a single quoting leg. Other examples, for example, for different trading strategies, are intended to be included in the scope of this patent document. 
       FIG.  5    illustrates a trading strategy order  500  for a trading strategy  510  including two quoting legs  520   a  and  520   b . That is, the order  500  includes multiple quoting legs  520   a  and  520   b . The trading strategy device  114  may receive the order  500 , for example, from a client device. The trading strategy device  114  may analyze the order  500  and identify that the order  500  includes multiple quoting legs or more than one quoting leg. Identifying may include counting the number of legs that are marked as quoting legs. 
     In  FIG.  5   , the trading strategy device  114  may determine that the order  500  includes two quoting legs. In response to identifying multiple quoting legs, the trading strategy device  114  may generate a first child order  530  and a second child order  540 . In this example, the first child order  530  includes both legs  520   a ,  520   b  but only leg  520   a  is marked as a quoting leg. Leg  520   b  is a non-quoting leg. That is, when generating the first child order  530 , the trading strategy device  114  may change the second leg  520   b  from a quoting leg to a non-quoting leg. Similarly, the second child order  540  includes both legs  520   a ,  520   b  but only leg  520   b  is a quoting leg. Leg  520   a  is a non-quoting leg. That is, when the second child order  540  is generated, the trading strategy device  114  may change the first leg  520   a  from a quoting leg to a non-quoting leg. The first child order  530  may be submitted to the server side device  120   a . The second child order  540  may be submitted to the second server side device  120   b.    
     The server side devices  120  may submit quoting orders for each of the quoting legs in the child orders to the exchange systems where orders for the quoting leg(s) are matched and filled. In this example, the first exchange system fills orders for the first leg  520   a  and the second exchange system fills orders for the second leg  520   b . As shown, the first child order  530  and second child order  430  may be marked as an order-cancels-order (OCO) type of order relative to each other, such that fully filling the quoting leg in one child order will subsequently cancel the other child order. OCO behavior may reduce the other child quantity based on the filled or legged quantity in the child order of which a quoting leg got filled. This will ensure that except for in-flight conditions, a trader will not be double filled due to in-flight conditions that can occur even if both quoting legs are managed from a single location. 
       FIG.  6    illustrates a trading strategy order  600  for a trading strategy  610  including two quoting legs  620   a ,  620   c  and two non-quoting legs  620   b ,  620   d . The trading strategy device  114  may receive the order  600 , for example, from a client device. The trading strategy device  114  may analyze the order  600  and identify that the order  600  includes multiple quoting legs or more than one quoting leg. Identifying may include counting the number of legs that are marked as quoting legs. 
     The trading strategy device  114  may determine that the order  600  includes two quoting legs  620   a ,  620   c . In response to identifying multiple quoting legs, the trading strategy device  114  may generate a first child order  630  and a second child order  640 . In this example, the first child order  630  includes legs  620   a - d  but only leg  620   a  is marked as a quoting leg. Legs  620   b - d  are marked as non-quoting leg in the first child order  630 . The second child order  640  includes legs  620   a - d  but only leg  620   c  is marked as a quoting leg. Legs  620   a ,  620   b , and  620   d  are marked as non-quoting legs. The first child order  330  may be submitted to the first server side device  120   a , since orders for the quoting leg  620   a  are filled at the first exchange system  140   a . The second child order  340  may be submitted to the second server side device  120   b , since orders for the quoting leg  620   c  are filled at the second exchange system  140   b . As shown, the first child order  630  and second child order  630  may be marked as an order-cancels-order (OCO) type of order, such that filling the quoting leg will subsequently cancel the other order. 
       FIG.  7    illustrates a trading strategy order  700  for a trading strategy  710  including three quoting legs  720   a ,  720   c ,  720   e  and two non-quoting legs  720   b ,  720   d . In this example, quoting legs  720   a ,  720   e  are matched and filled at the same exchanges system. Accordingly, the trading strategy device  114  may include quoting legs  720   a ,  720   e  in the same child order. As shown in  FIG.  7   , the trading strategy device  114  may receive the order  700 , for example, from a client device. The trading strategy device  114  may analyze the order  700  and identify that the order  700  includes multiple quoting legs or more than one quoting leg. Identifying may include counting the number of legs that are marked as quoting legs. 
     The trading strategy device  114  may determine that the order  700  includes two quoting legs  720   a ,  720   c . In response to identifying multiple quoting legs, the trading strategy device  114  may generate a first child order  730  and a second child order  540 . In this example, the first child order  730  includes legs  720   a - d  but only legs  720   a ,  720   e  are marked as a quoting leg, since legs  720   a ,  720   e  are filled at the same exchange system. Legs  720   b - d  are marked as non-quoting legs in the first child order  730 . The second child order  540  includes legs  720   a - d  but only leg  720   c  is marked as a quoting leg. Legs  720   a ,  720   b ,  720   d ,  720   e  are marked as non-quoting legs. The first child order  730  may be sent to the first server side device  120   a , since quoting legs  720   a ,  720   e  are filled at the first exchange system  140   a . The second child order  340  may be submitted to the second server side device  120   b , since the quoting leg  420   c  are filled at the second exchange system  140   b . As shown, the first child order  730  and second child order  730  may be marked as an order-cancels-order (OCO) type of order, such that filling the quoting leg will subsequently cancel the other order. 
     As an alternative to the example of  FIG.  7   , the trading strategy device  114  may generate three, different child orders, as opposed to the two child orders. Each child order may include a single quoting leg, which may be associated with a tradeable object. For example, a first, second, and third child order may be associated with first, second, and third tradeable objects, respectively. The first and second tradeable objects are traded at a first exchange system and the third tradeable object may be traded at a second exchange system. Accordingly, the first and second child orders, which are different orders, may be transmitted to the first exchange and the third child order may be transmitted to the second exchange system. 
     Child orders may have multiple quoting legs that are quoted at multiple exchange systems. As will be discussed below, a series of trading strategy devices  114  may be used to submit the child orders. For example, a first trading strategy device (for example, located in Chicago) may split a trading strategy order (for example, generated by a client device located in Milwaukee) into a first child order and a second child order. The first child order may include a first quoting leg associated with a first tradeable object that is traded at a first exchange system (for example, located in Europe) and a second quoting leg associated with a second tradeable object that is traded at a second exchange system (for example, located in Japan). The second child order may include a third quoting leg associated with a third tradeable object that is traded at a third exchange system (for example, located in Chicago). The first trading strategy device may send the first child order to a second trading strategy device (for example, located in Europe) and the second child order to a server side device associated with the third exchange system for submission. The second trading strategy device may split the first child order into a fourth child order and a fifth child order. The fourth and fifth child orders may be sent to server side devices associated with the respective exchange systems. 
     A server side device  120  may work with multiple exchanges, such that two or more quoting legs in a child order have quoting orders that are worked at different exchanges. For example, a child order may be associated with a first quoting leg that is worked at a first exchange and a second quoting leg that is worked at a second exchange. A server side device  120  may work orders for the first quoting leg and the second quoting leg, even though the orders are being worked at different exchanges. 
     Referring back to  FIG.  4 A , in response to determining that the trading strategy order  410  includes leg A and leg B, both of which are marked as quoting legs, the trading strategy device  114  may define a first child trading strategy including leg A and a second child trading strategy including leg B. Then, the trading strategy device  114  may generate a child order  414  for the first child trading strategy and a child order  416  for the second child trading strategy. Accordingly, the child order  414  includes leg A, which is marked as a quoting leg, and the child order  416  includes leg B, which is marked as a quoting leg. 
     The trading strategy device  114  may intelligently route the multiple child orders  414 ,  416 . For example, a child order can be sent to server side devices  120  adapted to work the child order with a respective exchange system  140  adapted to fill the quoting legs in the child orders. In the event that there are multiple server side devices  120  adapted to work a child order, the trading strategy device  114  may send the child order to a server side device  120  located at a site nearest to the exchange system  140 . For example, as shown, the child order  414  may be sent to the server side device  120   a , which is located nearest to the exchange system  140   a , and the child order  416  may be sent to the server side device  120   b , which is located nearest to the exchange system  140   b.    
     Furthermore, the trading strategy device  114  may select a communication path for sending the child orders based on latency. Latency may include the time required for a receiving device, such as a server side device  120  or exchange system  140 , to receive a child order from the trading strategy device  114 . The trading strategy device  114  may reduce or minimize latency, for example, by submitting a child order via a communication path that has the least or a reduced amount of delay between the trading strategy device  114  and the exchange systems. The communication path may connect the trading strategy device  114  and the exchange systems. In one example, the communication path may include communication devices, such as communication nodes, routers, servers, etc., that may report delay back to the trading strategy device  114 . The trading strategy device  114  may analyze the information to determine the optimum (for example, with the least latency) communication path. 
     Although  FIG.  4 A  illustrates splitting the trading strategy order  410  with a single trading strategy device  114 , a series of (for example, two, three, or more) trading strategy devices may be used for splitting the trading strategy order  410 . The series of trading strategy devices may split the trading strategy order at various layers or locations of the trading system  100 . Multi-layer, multi-location, or both multi-layer and multi-location splitting may be performed by one or more trading strategy device  112 . For example, a first trading strategy device, such as the trading strategy device  114 , may split the trading strategy order  410  into a first child order and a second child order. The first child order, including multiple quoting legs, may be transmitted to a second, different trading strategy device for splitting again. 
     Once a child order is received, the server side device  120  may submit an order for one or more quoting legs (“quoting order”) to an exchange system adapted to match the quoting leg. The one or more quoting legs in the quoting order may be the quoting legs defined in the child orders. For example, as shown in  FIG.  4   , in response to receiving the first child order  414 , the server side device  120   a  may submit a quoting order  418  to the exchange system  140   a . The quoting order  418  may include the first quoting leg Q 1 . In response to receiving the second child order  416 , the server side device  120   b  may submit quoting order  420  to the exchange system  140   b . The quoting order  420  may include the second quoting leg Q 2 . 
     The exchange systems  130   a ,  130   b  may confirm receipt of quoting order  418  and Q 2  quoting order  420  by sending an order confirmation  422  and order confirmation  424 , respectively. The order confirmations  422 ,  424  may include confirmation information that allows the server side devices  120   a ,  120   b  to work the quoting orders  418 ,  420 , respectively. For example, the confirmation information may include identification information that allows the server side device  120   a  to identify the quoting orders  312 ,  314  when placing subsequent orders, such as cancels or hedge orders. Without the confirmation information, the server side devices  120   a ,  120   b  may be unable to cancel, replace, or cancel or replace one or both of the quoting orders  418 ,  420 . 
     The server side devices  120   a ,  120   b  may be adapted to work the quoting order  418  and the quoting order  420 , respectively. As discussed above, working an order may include re-quoting the order, cancelling the order, sending a hedge order, managing an outstanding order, or any combination thereof. 
     For example, as shown in  FIG.  4 A , the server side device  120   b  may receive a market update  426  from the exchange system  140   a . The market update  426  may indicate a change in price of the leg that the quoting order  420  is leaning on. Accordingly, to achieve the target price for the trading strategy, as defined in the trading strategy order  410 , the server side device  120   b  may submit a change order. The change order  428  changes the quoting order  420 , such that the quoting order  420  has an adjusted price value. The adjusted price value is based on the change in price indicated in the market update and ensures that the target price for the trading strategy, as markets fluctuate, is achieved. The exchange system  140   b  may confirm receipt of the change order  428  by sending a change order confirmation  430  to the server side device  120   b.    
     However, prior to the server side device  120   b  receiving the change order confirmation  430 , the server side device  120   b  receives another market update  432  from the exchange system  140   a . The market update  432  is different than the market update  426 . For example, the market update  432  indicates yet another price change for tradeable object A. Until the server side device  120   b  receives the change order confirmation  430  for the change order  428 , the change order  434 , which adjusts the price value for quoting order  420 , cannot be sent. However, since the server side device  120   b  is located in, at, or near the exchange system  140   b  the time period  438  that the server side device  120   b  must wait is reduced, for example, because the change order confirmation  430  does not have to be sent all the way back to the server side device  120   a , as shown in  FIG.  3 A . 
       FIG.  4 B  illustrates a trading system  100  that is used for working a trading strategy order  410 . The process of placing the trading strategy order  410  is similar to that shown in  FIG.  4 A , however, instead of market update  432  being sent to the server side device  120   b , the exchange system  140   a  matches the quoting order  418  and sends a fill confirmation  440 . However, in another example, the quoting order  418  may be matched before or at the same time as the market update  426 . In response to filling the quoting order  418 , the exchange system  140   a  sends a fill confirmation  440  to the server side device  120   a , as shown in the example of  FIG.  4   , confirming that the quoting order  418  was matched. Alternatively, or additionally, the fill confirmation  432  may be sent to the client device  112 , trading strategy device  114 , server side device  120   b , or a combination thereof. 
     In response to receiving the fill confirmation  432 , the server side device  120   a  transmits a hedge order  444  and a cancel order  444  to the server side device  120   b . The hedge order  442  places a trade order for the leg that leg A was leaning on. The hedge order  442  may be submitted prior to or after the cancel order  444 . The cancel order  444  cancels the quoting order  420  for leg B. Although shown in  FIG.  4 B  as separate messages, the hedge order  442  and cancel order  444  may be a single order message. 
     In some embodiments, for example, when the server side devices  120   a ,  120   b  are not in communication with each other, the hedge order  442  and cancel order  444  may be transmitted to the trading strategy device  114  for routing to the server side device  120   b , for example. Alternatively, or additionally, the server side device  120   a  may transmit the hedge order  442  and cancel order  444  to the server side device  120   b , for example, when the server side devices  120   a ,  120   b  are in communication with each other. 
     Once the hedge order  442  is received by the server side device  120   b , the server side device  120   b  sends a hedge order  446  to the exchange system  140   b . The hedge order may be placed at any time, for example, before the change order confirmation is received  430 , before or after the cancel order  444 , after the server side device  120   b  receives the change order confirmation  430 , or any other time. 
     Prior to receiving the change order confirmation  430 , the server side device  120   b  receives cancel order  444 . However, at the time the cancel order  444  is received, the server side device  120   b  is unable to cancel the change order  428  because the server side device  120   b  has not received the change order confirmation  430  with the confirmation information; and thus, does not know which order to cancel. Accordingly, the server side device  120   b  is unable to perform the cancel operation until the change order confirmation  430  is received. As a result, the trader is open to risk during the time period  450 , which includes the time between receiving the cancel order  444  and receiving the change order confirmation  430 . However, as discussed below, this time period is much smaller than the instance where the change order confirmation  430  would have to be sent all the way back to the server side device  120   a  before sending the cancel order  448 . Once the change order confirmation  430  is received, the server side device  120   b  submits a cancel order  448 . The cancel order  448  cancels the change order  428 . The hedge order  446  may be submitted during the time period  450  because the confirmation information is not needed. 
     As shown in  FIG.  4 B , splitting a trading strategy order and sending child orders to server side devices  120  at, near, or in one, some, or all of the exchange systems  130  may reduce the amount of time that a trader is at risk for being legged, double filled, or both legged and double filled. That is, the server side device  120   b  can submit the cancel order  434  as soon as it receives the change (or a Cancel/Replace if Change is not supported) order confirmation from the exchange system  140   b . Since the server side device  120   b  and exchange system  140   b  are located closer to each other than the server side device  120   a  and the exchange system  140   b , the waiting time (i.e., the time period  450 ) for the confirmation  430  is less than the waiting time (i.e., the time period  334 ) for the confirmation  324 . Plus, the distance traveled by the change order confirmation  430  is less than the distance traveled by the change order confirmation  324 . Furthermore, the distance traveled by the cancel order  448  is less than the distance traveled by the cancel order  338 . With respect to time, a shorter distance may indicate less travel time, and thus, a greater advantage for the user. 
     Before and after the child orders are submitted to the exchange systems, the server side devices  120  may, for example, cancel orders, change orders, query an exchange, or any combination thereof. Cancelling orders may include cancelling all or some of an order that has been or is scheduled to be submitted to an exchange system. For example, in the event that an exchange system  140  is only able to fill a portion of a quoting order, the exchange system  140 , instead of waiting until the entire order can be filled, will trade only the portion that is able to be filled and send a partial fill order to the server side device  120 . In response, the server side device  120  may send a partial cancel order and a partial hedge order. This allows continuous or periodic filling until the entire trading strategy is completely filled. 
     Furthermore, changing an order may include, for example, changing order parameters, changing the formatting of an order (for example, changing to a protocol, such as the Financial Information Exchange (FIX) protocol), submission time of an order, changing a communication path for submission, or any combination thereof. Querying an exchange may include requesting information, such as market data, or other data. 
     The child trading strategies are the same as the parent trading strategy except for the number of legs marked as quoting legs. That is, filling either the first child order  414  or the second child order  416  is the same as filling the trading strategy order  410 . For example, filling one of the child orders may produce the same or substantially the same result as filling the trading strategy order  410  from the client device  112 . The term “substantially” takes into account minor variations in the electronic trading system  100 , for example, changes in price that may occur by varying (for example, increasing or decreasing) the time for filling one or more orders. Prices fluctuate quickly. Accordingly, the price for filling the order from the client device  112  may be different than the price for filling a child order, for example, because the child order may be submitted in less time than the order from the client device  112 . However, the same trading strategy is executed, even though the price may change, by filling the order from client device  112  or filling a combination of one, some, or all of the child orders  230 ,  240 . It should be noted that having a server side device that is close to the exchange system increases the likelihood of filled on the quoting leg. Furthermore, the hedge order is more likely to arrive faster to the exchange system (compared with a single server side solution). Additionally, there is less likelihood of being double filled since the second quoting order is removed faster (the in-flight time is reduced to a minimum). 
     In the example of  FIG.  4 B , the exchange system  140   a  filled the first child order  414  before the exchange system  140   b  was able to fill the second child order  416 . However, in other examples, the exchange system  140   b  may be able to fill the second child order  416  before the first child order  230  is filled. Accordingly, the process may be reversed such that the Q 1  order  418  is cancelled and replaced. 
     IV. Exemplary Trading Strategy Device 
       FIG.  8    illustrates one example of a trading strategy device  114 . The trading strategy device  114  includes one or more electronic computing platforms. For example, as shown in  FIG.  8   , the trading strategy device  114  may include an electronic computing platform having a processor  810  and a memory  820 . The processor  810  may be communicatively coupled with the memory  820  and execute instructions stored on the memory  820 . The trading strategy device  114  may include additional, different, or fewer components. 
     The processor  810  may be a general processor, digital signal processor, application specific integrated circuit, field programmable gate array, analog circuit, digital circuit, combinations thereof, or other now known or later developed processors. The processor  810  may be a single device or a combination of devices, such as associated with a network or distributed processing. Any of various processing strategies may be used, such as multi-processing, multi-tasking, parallel processing, or the like. Processing may be local, as opposed to remote. However, processing can be performed remotely. Processing may be moved from one processor to another processor. The processor  810  may be responsive to logic encoded in tangible media. The logic may be stored as part of software, hardware, integrated circuits, firmware, micro-code or the like. 
     The memory  820  may be computer readable storage media. The computer readable storage media may include various types of volatile and non-volatile storage media, including but not limited to random access memory, read-only memory, programmable read-only memory, electrically programmable read-only memory, electrically erasable read-only memory, flash memory, magnetic tape or disk, optical media and the like. The memory  820  may be a single device or combinations of devices. The memory  820  may be adjacent to, part of, programmed with, networked with and/or remote from processor  810 . 
     The processor  810  may be operable to execute logic encoded in one or more tangible media, such as memory  820 . Logic encoded in one or more tangible media for execution may be instructions that are executable by the processor and that are provided on the computer-readable storage media, memories, or a combination thereof. The processor  810  is programmed with and executes the logic. The functions, acts or tasks illustrated in the figures or described herein may be executed in response to one or more sets of logic or instructions stored in or on computer readable storage media. The functions, acts or tasks are independent of the particular type of instructions set, storage media, processor or processing strategy and may be performed by software, hardware, integrated circuits, firmware, micro code and the like, operating alone or in combination. 
     In one example, as shown in  FIG.  8   , the memory  820  may include instructions that may be executed to receive a trading strategy order  822  (hereinafter, “instructions  822 ”), instructions that may be executed to split the trading strategy order into multiple child orders  824  (hereinafter, “instructions  824 ”), and instructions that may be executed to submit the multiple child orders  826  (hereinafter, “instructions  826 ”). The memory  820  may include additional, different, or fewer instructions. 
     The instructions  822  may be executed to receive a trading strategy order for a trading strategy including multiple quoting legs, one or more non-quoting legs, or a combination thereof. For example, the trading strategy may have a first quoting leg and a second quoting leg. The instructions  824  may include instructions that may be executed to determine or identify that the trading strategy has multiple quoting legs. Furthermore, the instructions  824  may define child trading strategies and/or instructions that may generate multiple child orders. Each child order may include a single quoting leg or less quoting legs than the initial trading strategy order. The instructions  826  may include instructions that may be executed to submit the multiple child orders, for example, to two or more exchange systems. The exchange systems may be the same or different exchange systems. Submitting the multiple child orders may include transmitting the child orders to server side devices adapted to submit quoting orders for the quoting legs to exchange systems adapted to fill the quoting orders. The server side devices may be physically located at, near, or in the exchange systems. For example, the first child order may be matched and filled at a first exchange system and the second child order may be matched and filled at a second exchange system. 
     V. Exemplary Methods For Electronic Trading 
       FIG.  9    illustrates an exemplary method  900  for electronically trading a trading strategy order. The acts may be performed in the order shown or a different order. The method  900  includes receiving a trading strategy order having multiple quoting legs  910 , splitting the trading strategy order into multiple child orders  920 , and completing an electronic trade  930 . Additional, different, or fewer acts may be performed in the method  900 . 
     In act  910 , a trading strategy device may receive a trading strategy order including a trading strategy including multiple quoting legs. Receiving may include requesting, pulling, intercepting, or otherwise obtaining. 
     In various embodiments, for example, prior to act  910 , the method  900  may include generating a trading strategy order, for example, according to the trading strategy definition. A trading strategy definition may be received from the client device. For example, the trading strategy may be defined by a user using a client device. Defining the trading strategy may include defining one or more tradeable objects. The tradeable objects may be legs, such as quoting legs or non-quoting legs. The trading strategy definition may be automatically or manually input by a trader into the client device. In another example, all or some of the trading strategy definition may be received at the same or different times. For example, a trader may define a trading strategy (e.g., define a spread) and send the configuration data to the trading strategy device or the server side devices. Then, during a trading session, the price and quantity information may be defined, for instance, by selecting a price and quantity along a price axis. 
     Once generated, a client device may send the trading strategy order to the trading strategy device  114 . The trading strategy order may be sent at the request from a user (for example, by clicking a “Send” button) or automatically. For example, a trader may utilize an electronic trading workstation to place the trading strategy order. As another example, an automated trading tool may calculate one or more parameters for an order and automatically send the order. In some instances, an automated trading tool may prepare the order to be sent but not actually send it without confirmation from the user. 
     In some embodiments, the client device designates the trading strategy device as the recipient of the trading strategy order, for example, using an address or communication path allocated to the trading strategy device. However, in other embodiments, the trading strategy order can be sent to another device that routes the trading strategy order to the trading strategy device. 
     As discussed above, the trading strategy order may be associated with a trading strategy having multiple quoting legs. That is, the trading strategy has multiple legs that are marked as quoting legs. The legs marked as quoting legs may be some or all of the legs in the trading strategy. 
     In act  920 , the trading strategy device splits the trading strategy order.  FIG.  10    illustrates an example of act  920 . As shown in  FIG.  10   , splitting includes identifying a trading strategy order associated with a trading strategy having multiple quoting legs  1010 , defining child trading strategies  1020 , and generating child orders for the child trading strategies  1030 . Splitting is not limited to those acts described above. Splitting the trading strategy order may include additional, different, or fewer acts. 
     In act  1010 , the trading strategy device identifies a trading strategy order associated with a trading strategy including multiple quoting legs. Identifying may include counting, recognizing, calculating, or otherwise determining the number of quoting legs in a trading strategy order and determining whether the number of quoting legs is two or more. For instance, the trading strategy device may analyze each leg in the trading strategy order, determine whether each leg is a quoting leg or a non-quoting leg, and count the number of legs that are marked as quoting legs. In another example, the client device, for example, when generating the trading strategy order, indicates the number of quoting legs in a field designated for indicating the number of quoting legs in trading strategy order. Accordingly, the trading strategy device may read and analyze that field. 
     In act  1020 , the trading strategy device defines child trading strategies. For example, in response to identifying a trading strategy order associated with a trading strategy including multiple quoting legs, the trading strategy device defines multiple child trading strategies. The child trading strategies are the same as the trading strategy associated with the trading strategy order, except for the number of legs that are being quoted. That is, the number of legs marked as quoting legs in the child trading strategies is different than (e.g., less than) the number of legs marked as quoting legs in the trading strategy associated with the trading strategy order—even though the strategy (e.g., buying and selling tradeable objects) is the same. For instance, the child trading strategies may include a single quoting leg or a reduced number of quoting legs (for example, relative to the number of quoting legs in the trading strategy order). 
     As discussed above, the number of child trading strategies that are defined depends, for example, on the number of quoting legs in the trading strategy order. Each child trading strategy may have a single quoting leg. However, in another example, multiple quoting legs may be included or grouped in a single child trading strategy. Quoting legs may be grouped based on the exchange system adapted to match the quoting legs. For example, quoting legs that are traded at the same exchange system may be included in the same child trading strategy. However, even when grouped together, the number of quoting legs in the child order is less than the number of quoting legs in the trading strategy order. 
     Each child trading strategy has zero, one, or more quoting legs. For example, the number of quoting legs in the child trading strategies is less than the number of quoting legs in the trading strategy of the initial order. 
     In act  1030 , child trading strategy orders may be generated. Each child order may include one of the child trading strategies. Once one, some, or all the child trading strategies are defined, as shown in act  1020 , the trading strategy device generates multiple child trading strategy orders. Each child order includes a child trading strategy including a single quoting leg or a reduced number of quoting legs. Any number (for example, two or more) of child orders may be generated, for example, depending on the complexity of the trading strategy in the trading strategy order. For instance, generating child trading strategies may include generating a child order for each quoted leg in the trading strategy associated with the trading strategy order. In another example, generating child trading strategies may include minimizing the number of child orders that need to be generated, for example, by grouping child trading strategies. The legs or trading strategies may be grouped, for example, based on latency, physical location of the server side devices or exchange systems or gateways, trader preference, exchange capabilities, other now known or later developed criteria, or any combination thereof. 
     When generating child trading orders, all, some, one, or none of the legs in the child orders are quoting legs. That is, a child order can have any number of non-quoting legs and/or quoting legs. The number of child orders may depend on, for example, the number of legs in the trading strategy, the number of quoting legs, latency, capabilities of the exchanges, or any combination thereof. The number of non-quoting legs and quoting legs in the child orders may be the same or different. The number of non-quoting legs and quoting legs may or may not vary between child orders. For example, in the child orders, quoting legs may be mixed with other quoting legs or non-quoting legs. However, a single non-quoting leg and quoting leg may, alternatively or additionally, stand alone. The trading strategy device determines the number of child orders, the number of non-quoting legs in each child order, the number of quoting legs in each child order, or a combination thereof based on, for example, latency in submitting the child orders. The trading strategy device may minimize the time for submitting the child orders. 
     Referring back to  FIG.  9   , in act  930 , the trading strategy device may complete the trading transaction. Completing the trading transaction may include sending the child trading strategy orders to one or more server side devices. The trading strategy device may intelligently route the multiple child orders. For example, a child order can be sent to a server side device adapted to work the child order with an exchange system adapted to fill the quoting legs in the child orders. In the event that there are multiple server side devices adapted to work a child order, the trading strategy device may send the child order to a server side device located at a site nearest to the exchange system. For example, as shown, the child order may be sent to the server side device, which is located nearest to the exchange system, and the child order may be sent to the server side device, which is located nearest to the exchange system. 
     Furthermore, the trading strategy device may, for example, select a communication path for sending the child orders based on latency. Latency may include the time required for a receiving device, such as a server side device or exchange system, to receive a child order from the trading strategy device. The trading strategy device may reduce or minimize latency, for example, by submitting a child order via a communication path that has the least or a reduced amount of delay between the trading strategy device and the exchange systems. The communication path may connect the trading strategy device and the exchange systems. In one example, the communication path may include communication devices, such as communication nodes, routers, servers, etc., that may report delay back to the trading strategy device. The trading strategy device may analyze the information to determine the optimum (for example, with the least latency) communication path. 
     In some embodiments, the method  900  may include submitting quoting orders associated with a child order. A quoting order may be an order, for example, configured as required by an exchange system. Accordingly, a child order may be a quoting order or different than a quoting order. That is, a child order may be configured as required by an exchange system or not configured as required by the exchange system. A server side device submits quoting orders. 
     Furthermore, act  930  may include submitting hedge orders, receiving partial fill orders, submitting partial hedge orders, submitting a cancel order (for example, an order cancels order), or otherwise ensuring that the trading strategy is executed. Of course, other acts may be performed when working the quoting orders. 
     VI. Exemplary Illustration 
     The following illustration illustrates a few of the concepts and advantages of a distributed server side device environment. The following illustration only illustrates some of the various embodiments and should not be interpreted as disclosing all of the embodiments. 
     A trader, using a client device that is physically located in New York City, is spread trading crude oil traded on the Tokyo Commodity Exchange (TOCOM) and crude oil traded on the Chicago Mercantile Exchange (CME). In this illustration, the crude oil traded in Tokyo may be referenced as “COT” and the crude oil traded in Chicago may be referenced as “COC”. The large distance between New York City and the exchange cities makes it especially advantageous to use a distributed server side environment, as will be illustrated below. 
     During a trading session, the trader uses a client device to submit a trade order for the spread (e.g., COT-COC). In this illustration, the spread has two legs. The first leg is associated with buying COT and the second leg is associated with COC. The trader may have indicated, for example, by checking one or more boxes on a trading screen, that both of the legs should be quoted. Accordingly, the spread has multiple quoting legs. In particular, the spread has two quoting legs. Once received, the trading strategy identifies that the spread has two quoting legs. In response, the trading strategy device sends a first child trading strategy order to a first server side device and a second child trading strategy order to a second server side device. The first and second server side devices are different server side devices. 
     The first and second child trading strategy orders are associated with the same trading strategy as the original trade order, except only the first leg is quoted in the first child trading strategy order and only the second leg is quoted in the second child trading strategy order. 
     In this illustration, the trading strategy device is physically located at or near the client device. Accordingly, since the first server side device is located at, in, or near the TOCOM and the second server side device is located at, in, or near the CME, the distance between the trading strategy device (NYC) and the first server side device (Tokyo) is approximately 6735 miles and the distance between the trading strategy device (NYC) and the second server side device (Chicago) is approximately 711 miles. Accordingly, data that is transferred from the trading strategy device to first server side device or vice versa takes approximately 220 milliseconds and data that is transferred from the trading strategy device to the second server side device or vice versa takes approximately 30 milliseconds. 
     Since the first server side device sits at, in, or near the TOCOM, the time for transferring data from the first server side device to the TOCOM is approximately 10 milliseconds. Likewise, since the second server side device sits at, in, or near the CME, the time for transferring data from the second server side device to the CME or vice-versa is also approximately 10 milliseconds. These numbers are only examples. 
     Before further explaining further, it should be noted again that each of the values (e.g., time and distance) in this illustration are for exemplary purposes only. One, some, or all of these values may, and likely will, change for a variety of reasons. 
     Once the first child trading strategy and second child trading strategy are defined, the trading strategy device sends the first child trading strategy order to the first server side device at, in, or near the TOCOM and the second child trading strategy order to the second server side device located at, in, or near the CME. The first server side device is adapted to work the first leg, which is the only leg quoted in the first child trading strategy order, and the second server side device is adapted to work the second leg, which is the only leg quoted in the second child trading strategy order. 
     As part of working the orders, the first server side device generates a first quoting order and submits the first quoting order to the TOCOM. The first server side device generates a second quoting order and submits the second quoting order to the CME. 
     One benefit of having distributed server side devices working quoting orders is that the data transfer between the server side devices and the exchanges is less than having a single server side device working multiple quoting orders at multiple exchanges. That is, if a single server side device at the TOCOM was working the first and second child trading strategy orders, the single server side device would have to wait approximately 250 (220+30) milliseconds for data from the CME. Compared to the approximately 10 milliseconds that the second server side device has to wait, the benefit is quite noticeable. 
     VII. Conclusion 
     The description includes a number of inventions. The various inventions are not limited in their application to the details of design and the arrangement of the components set forth in the summary or description or illustrated in the drawings. The inventions are capable of other embodiments or of being practiced or carried out in various ways. It will be understood that various changes may be made and equivalents may be substituted and/or many modifications may be made. It is intended that the inventions not be limited.