US Stock Exchanges

American Stock Exchange (AMEX)
Boston Options Exchange (BOX)
Boston Stock Exchange
Chicago Board Options Exchange (CBOE)
Chicago Board of Trade (CBOT)
Chicago Climate Exchange (CCX; parent company of the Chicago Climate Futures Exchange, European Climate Exchange and Insurance Futures Exchange)
Chicago Mercantile Exchange (CME)
Chicago Stock Exchange (CHX)
Currenex (currency exchange)
ICE (IntercontinentalExchange)
ICE Futures US (formerly the New York Board of Trade)
International Securities Exchange
Iowa Electronic Markets
Kansas City Board of Trade
Minneapolis Grain Exchange (MGEX)
NASDAQ OMX
NASDAQ Stock Market
National Stock Exchange (NSX - formerly Cincinnati Stock Exchange)
New York Mercantile Exchange (NYMEX, aquired by CME Group Inc. (NYSE, NASDAQ: CME))
New York Stock Exchange (NYSE; merged with Euronext)
OneChicago (OCX; joint venture of CME, CBOT, and CBOE)
OTC Bulletin Board
Philadelphia Stock Exchange (PHLX)
Pink Sheets (formerly the National Quotation Bureau)
San Diego Stock Exchange
U.S. Futures Exchange (USFE)

US Electronic Exchanges

BATS Trading
Boston Equities Exchange
Bloomberg Tradebook (BTRD)
CBOE Stock Exchange (CBSX)
Direct Edge