A system and method for providing market information are disclosed. In
this application, updates are received for a tradeable object at a price
level from at least one exchange. To the extent that the updates do not
include enough details to compute the number of orders resting at a
particular price level in a market, estimation may be used to provide
order queue information. As a result, the number of orders which are
pending in the market at various price levels may be determined using the
techniques described herein. The interface disclosed herein may be used
to display the number and/or quantity of the orders in the order queue.