Patent ID: 8442890

Claim:
A trading display and order placement apparatus comprising: a processing device configured to execute code including instructions to display a graphical user interface having: a region comprising a plurality of locations, each location corresponding to a price level along a price axis having a curvilinear shape, the region for dynamically displaying a first indicator in a first location of the plurality of locations and a second indicator in a second location of the plurality of locations, the first indicator representing quantity associated with at least one order to buy a tradeable object at a highest bid price and the second indicator representing quantity associated with at least one order to sell the tradeable object at a lowest ask price, where in response to receiving a new highest bid price, the first indicator is moved to a new location of the plurality of locations corresponding to the new highest bid price and in response to receiving a new lowest ask price, the second indicator is moved to a new location of the plurality of locations that corresponds to the new lowest ask price, and an order entry region comprising a plurality of locations for receiving commands to send trade orders, each location corresponding to a price level along the price axis; a user input interface communicatively coupled with the processing device and configured to receive a command selecting one of the plurality of locations of the order entry region corresponding to a desired price level in response to a single action of the user input device, the single action of the user input device setting a plurality of parameters and a default quantity for a trade order, each parameter of the plurality of parameters being one or more user-defined features for order submission; and an order router communicatively coupled with the processing device and configured to send the trade order to an electronic exchange at the desired price level in response to the command.