Using a feed backbone computer network, enables connection of counterparty customers in disparate Financial Information Exchange (FIX) networks, across IP network boundaries. The feed backbone network links consumer, database, management, and proxy computer systems with a FIX backbone computer network in turn connected to trading extranets via access centers. Proxy computer systems balance their shared message processing load, log message traffic, manage operational sessions, and collect and present aggregated feed information to client users, whether connected locally or to the trading extranets. A software proxy acts as a “middleman” between the two customer endpoints. Copies selected FIX messages to a multicast backbone for aggregation in a standard format. The entire network is centrally configurable and supports realtime operational status.