Patent ID: 8015100

Claim:
A device for facilitating trading and displaying market information relating to two tradeable objects being traded on at least one electronic exchange, the device comprising: a display device; and a processor coupled with the display device and configured to execute code to cause the display device to provide a graphical user interface including: a first combined quantity indicator being dynamically displayed at a location corresponding to a first price level of a plurality of price levels on a common static price axis, the first combined quantity indicator representing quantity associated with an order to buy a first tradeable object and an order to buy a second tradeable object, wherein the first tradeable object and the second tradeable object are different tradeable objects, a second combined quantity indicator being dynamically displayed at a location corresponding to a second price level on the common static price axis, the second combined quantity indicator representing quantity associated with an order to sell the first tradeable object and an order to sell the second tradeable object, an order entry region comprising a plurality of locations corresponding to the plurality of price levels along the common static price axis, such that a selection of one of the plurality of locations by a single action of a user input device sends a trade order for the first tradeable object, the second tradeable object, or both the first tradeable object and the second tradeable object, wherein in response to a selection of one of the plurality of locations of the order entry region, a quantity allocation rule is used to allocate an order quantity of the trade order to the first tradeable object, the second tradeable object, or both the first tradeable object and the second tradeable object.