Stock exchanges in the United States

There are currently 13 U.S. stock exchanges, 12 of which are run by Intercontinental Exchange Inc’s (ICE) NYSE, Nasdaq Inc (NDAQ), and Cboe Global Markets (CBOE). IEX Group runs the only independent exchange.

(by market cap)    
           
Ticker       Company name Mkt Cap▼

• CME CME Group 75.612B
• ICE Intercontinentalexchange 51.743B
• NDAQ NASDAQ OMX 16.581B
• CBOE Cboe Global Markets 12.906B

change from open - finviz http://finviz.com/screener.ashx?v=211&ta=0&o=-changeopen&t=CME,ICE,NDAQ,CBOE

by market cap

  

There are 13 regulated exchanges in the U.S.

American Stock Exchange	New York City	1908		AMEX
Arizona Stock Exchange	Phoenix	1990
Boston Stock Exchange	Boston	1834		BSE
Chicago Stock Exchange	Chicago	1882		CHX
Direct Edge	Jersey City	1998		EDGA and EDGX
Nadex (Northern American Derivatives Exchange), formerly known as HedgeStreet	Chicago, Illinois	2004		HedgeStreet
NASDAQ	New York City	1971		NASDAQ
National Stock Exchange	Jersey City	1885		NSX
New York Board of Trade	New York City	1998		NYBOT
New York Stock Exchange	New York City	1817		NYSE
NYSE Arca	New York City	2006		NYSE Arca
Philadelphia Stock Exchange	Philadelphia	1790		PHLX

In 2020, launches are planned for the Members Exchange, a new bourse backed by a group of large financial firms; a stock exchange run by options exchange operator Miami International Holdings that says it will eventually list companies from Latin America; and the Long Term Stock Exchange, a Silicon Valley-based startup aimed at promoting long-term growth ahead of short-term profits for the companies it lists.

The Members Exchange aims to go live in mid-2020 and is backed by financial heavyweights including Virtu Financial Inc (VIRT), Morgan Stanley (MS) and TD Ameritrade (AMTD).

• 8/27/13 : BATS, Direct Edge To Merge Creating Second-Largest US Stock Exchange
• http://www.bloomberg.com/news/2013-08-26/bats-agrees-to-merge-with-direct-edge-as-exchange-volume-shrinks.html
• http://www.reuters.com/article/2013/08/26/us-batsglobalmarkets-directedge-idUSBRE97P0H320130826
• The combined company will use the proprietary BATS technology. It will be headquartered in Kansas City, Mo., where BATS is based.
  BATS CEO Joe Ratterman will serve as CEO of the combined company. Direct Edge CEO William O'Brien will serve as president.
  The transaction is expected to close in the first half of next year.

more at http://en.wikipedia.org/wiki/List_of_stock_exchanges_in_the_Americas