A system and method for displaying quantity related information determined for a plurality of time periods are described. According to one method, a trader may define one or more time periods for which a trading application may determine traded quantities, traded buys, traded sells, or other quantity related information at a plurality of price levels during the defined time periods. The trading application may then graphically display the quantities for each time period in relation to the static axis of prices. The method further includes periodically updating the displayed traded quantity to reflect the quantity during the defined time period, where the quantity is updated based on subsequent market updates that are received from the exchange for the tradable object.