Patent ID: 8793181

Claim:
A non-transitory computer readable medium having instructions stored thereon, which when executed cause a processor to execute acts comprising: receiving a user-selection of an order entry location corresponding to at least one axially aligned price level of a plurality of displayed axially aligned price levels, where each level of the plurality of displayed axially aligned price levels represents a combined value to trade a first tradeable object and a second tradeable object, where an underlying product of the second tradeable object is different from an underlying product of the first tradeable object, and where each combined value of the plurality of displayed axially aligned price levels is derived from at least both market data for the first tradeable object and market data for the second tradeable object; and initiating submission of a trade order for any of the first tradeable object and the second tradeable object in response to receiving the user-selection of the order entry location, and where an order quantity of the trade order is allocated between the first tradeable object and the second tradeable object according to a quantity allocation rule.