Patent ID: 7523064

Claim:
A computer-based method for use in facilitating trading of multiple tradeable objects in an electronic trading environment, the method comprising: displaying, via a computing device, a first combined quantity indicator at a location corresponding to a price level along a common axis of static prices, the combined quantity indicator representing quantity associated with an order to buy a first tradeable object and an order to buy a second tradeable object, where the first tradeable object and the second tradeable objects are different tradeable objects; displaying, via the computing device, a second combined quantity indicator at a location corresponding to a price level along the common axis of static prices, 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; displaying, via the computing device, an order entry region comprising a plurality of locations for receiving a command to send a trade order, each location corresponding to a price level along the common axis of static prices; receiving, via the computing device, a plurality of quantity allocation rules to be used to allocate an order quantity of a trade order received by the order entry region; receiving, via the computing device, a command to send a trade order, including an order quantity, by selection of one of the plurality of locations of the order entry region, the trade order operable to initiate a trade for the first tradeable object and the second tradeable object substantially simultaneously; determining, via the computing device, at least one of the plurality of quantity allocation rules in response to receiving the command; and in response to the command, allocating, via the computing device, the order quantity of the trade order to the first tradeable object, the second tradeable object, or both the first and second tradeable objects.