Patent ID: 8150761

Claim:
A system for displaying securities market transaction information received from a securities exchange market data system comprising: an exchange server operatively coupled to the securities exchange market data system and adapted to receive therefrom transaction information and order book information relating to an order book for at least one security, the transaction information including price and volume of at least one trade in the at least one security; and a trader workstation operatively coupled to the exchange server; where the exchange server is adapted to transmit to the trader workstation a selectable portion of the transaction information and order book information relating to the at least one security; where the trader workstation being is adapted to display for each trade of a user-selected security within a user-selected range of transactions represented in the transaction information an indicia representing the price of such trade; where the trader workstation is adapted to determine according to the transaction information and the order book information whether the trade was seller-initiated or buyer-initiated, and is responsive to the determination to control appearance of the indicia to distinguish between buyer-initiated and seller-initiated trades; where an open sell order in the order book being bought comprises a buyer-initiated trade and an open buy order in the order book being sold comprises a seller-initiated trade; and where the trader workstation is adapted to display at least a subset of the order book information for the at least one security adjacent the indicia.