At the closing of the merger between NYSE Euronext and the American Stock Exchange, the name of the American Stock Exchange will be changed to NYSE Alternext U.S. On a specified date following that closing, trading in NYSE Alternext listed securities will be migrated to 11 Wall Street and integrated onto the NYSE Trading Platform. The Market Data stream will print all NYSE Alternext Securities trades and quotes to Tape B as “A”, since NYSE Alternext U.S. and NYSE will continue to be separate registered securities exchanges. Member Firms are being advised in advance so that they can prepare for changes in both trading and post trading systems.

Amex Trading System Integration Notice
Amex Post Trade System Integration Notice