A system for processing traditional open-end mutual fund purchase and redemption orders at a server at designated Exchange(s) for receiving order messages from at least one of a plurality of Brokers and Member Firms, the server having at least one processor and memory for storing routines operable to process individual or aggregated order messages, preferably based on a prioritized set of business rules, and/or match the purchase and redemption orders, reformat the orders, and transmit the reformatted orders to at least one of a plurality of Fund/Securities Clearing Agents, Funds/Transfer Agents and Depositaries for confirmation, and clearing and settlement of issuance and redemption orders for mutual fund shares, as well as payment of mutual fund dividends.