Patent ID: 7991678

Claim:
A method for displaying market information for a tradeable object listed on an electronic exchange, the method comprising: receiving market information that comprises bids and offers for a tradeable object from the electronic exchange; generating by a computing device a price axis comprising a plurality of price levels, wherein each of the plurality of price levels of the price axis is associated with a bid or an offer that is pending for the tradeable object; displaying the market information along the price axis; displaying an order entry region aligned with the price axis comprising a plurality of areas for receiving order commands from a user input device to send trade orders at the plurality of price levels at which the bid or the offer is pending for the tradeable object, each area corresponding to a price along the price axis, wherein each order command has an order price resulting from selecting a particular area in the order entry region corresponding to a desired price, each order command accomplished by a single action of the user input device with a pointer of the user input device positioned over the particular area to set an order price parameter for a trade order based on the desired price level and send the trade order to the electronic exchange; receiving by the computing device a command; and generating by the computing device an expanded price axis in response to the command, wherein the expanded price axis includes a price level at which there is no bid or offer pending for the tradeable object, wherein the order entry region is displayed along the expanded price axis and comprises an area associated with the price level at which there is no bid or offer pending at the price level at the electronic exchange.