Systems and methods for chart-based order entry are described. According
to one example method a chart is used to display historical market data
corresponding to a tradeable object. An order entry interface is
displayed in relation to the chart. The order entry interface includes a
plurality of price objects for selecting price levels to be used for
trade orders to buy or sell the tradeable object. According to one
example method, the price levels corresponding to the price objects
depend on a location of the interface in relation to the chart, and as
the interface is moved in relation to the chart, the price levels are
automatically updated. Upon selection of the price level on the
interface, a trade order to buy or sell is submitted to a matching engine
at an electronic exchange.