What are Matching Systems?
Most matching systems allow traders to place their orders anonymously through specific protocols. The system will evaluate the order and route that to appropriate cross-matching engine, which handle order executions of specific symbols. If matching counterpart order is there, the orders are executed instantaneously. If no matching order, then the ask/bid order is displayed to all traders involved to place matching orders. Orders are usually executed on a time-priority basis.
Matching systems are often less susceptible for price manipulations 1) as trades are done anonymously and 2) as trades are done purely in a quote-driven environment. All trades are done electronically usually without broker involvement. Usually there will be minimum order size requirements (eg: 10,000 shares). Most matching systems derive ask and bid prices passively from NBBO (National Best Bid and Offer).
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