Financial services, namely, providing financial information in the nature of market trade and quotation information for securities; providing financial information in the nature of real-time and post-trade securities transaction cost analysis; trading support services in the field of financial securities, namely, trade comparison and collection, processing, tabulation, and distribution of trade data; providing securities trading information, namely, classification of securities, brokers, dealers, and issuers; calculation, provision, and updating for the benefit of others of financial securities indices and sub-indices; providing online electronic computer databases featuring securities information via a global computer network; providing online electronic computer databases which provide subscribers with trading information concerning securities