Patent ID: 7308428

Claim:
A method of displaying data regarding one or more electronic securities-trading markets to a user computer, comprising: (a) electronically receiving over a computer network a request from the user computer to view information on a security or group of securities traded on one or more electronic securities-trading markets; (b) electronically receiving over a computer network data describing the liquidity conditions in said electronic securities-trading markets; (c) electronically storing said received data describing the liquidity conditions in said electronic securities-trading) markets; (d) calculating in real time a market impact analysis display for said security or group of securities, based on said received data describing said liquidity conditions in said securities-trading markets that displays projected market impact as a function of trade size in two or more piecewise-continuous curves comprising at least one curve that is a function of trade size for user bids trading with a book of executable offers and at least one curve that is a function of trade size for user offers trading with a book of executable bids; and (e) transmitting said market impact analysis display or data sufficient to generate said market impact analysis display to said user computer.