1. An apparatus for processing a stream of financial market data messages, the apparatus comprising: a reconfigurable logic device configured with a plurality of firmware application modules (FAMs) arranged in a pipeline, at least one of the FAMs comprising a symbol mapping FAM, the symbol mapping FAM configured to (1) receive at least a plurality of the financial market data messages, each received financial market data message corresponding to a financial instrument and comprising a symbol identifier for identifying that message's corresponding financial instrument, and (2) map each symbol identifier to another symbol value that identifies the financial instrument corresponding to the financial market data message having that symbol identifier.