A system for monitoring information about debt securities and reporting trades in the debt securities market. The system includes user stations and a host processor. Users input data requests and trade information to the user stations which transmit the requests and trade information to the host processor. The host processor processes information about the trades and requests for information using databases which contain various types of information about the debt securities and users. The host processor transmits processed trade information and requested information to the user stations which present the information to the users.