American Stock Exchange (AMEX)
Boston Stock Exchange(BSE)
Chicago Board Options Exchange (CBOE)
Chicago Stock Exchange (CHX)
Depository Trust Company (DTC)
Emerging Markets Clearing Corporation (EMCC)
Fixed Income Clearing Corporation (FICC) (formerly: Government Securities Clearing Corporation)
International Securities Exchange (ISE)
Municipal Securities Rulemaking Board (MSRB)
National Association of Securities Dealers (NASD)
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National Futures Association (NFA)
National Securities Clearing Corporation (NSCC)
National Stock Exchange (NSX) (formerly: Cincinnati Stock Exchange)
New York Stock Exchange (NYSE)
National Market System (NMS) Plans (NMS)
NQLX (NQLX) (formerly: Nasdaq Liffe Markets)
OneChicago LLC (OC)
Options Clearing Corporation (OCC)
Pacific Exchange, Inc. (PCX)
Philadelphia Stock Exchange (PHLX)
Stock Clearing Corporation of Philadelphia (SCCP)
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