The American Stock Exchange today announced that the rules for its new hybrid market structure were filed with the U.S. Securities and Exchange Commission.

In combination with the rule filing, the Amex announced that its new state-of-the-art trading system supporting Amex’s market structure will be called AEMI – the “Auction and Electronic Market Integration” platform (pronounced “Amy”).

The AEMI trading platform, which has been in development since April 2004, will be rolled out with the implementation of Regulation NMS in June 2006. It is an independent, electronic trading platform that will support all of the products currently offered by Amex — equities, ETFs, options, and bonds.

Amex’s proposed hybrid market structure offers market participants automated execution combined with the dedicated liquidity provision of an auction market for times of order imbalances, complex trades, or when natural liquidity cannot be found. It hopes that the fusion of automated execution and the auction market will meet the future needs of Amex customers and will ensure that the exchange will be competitive in the post-Reg NMS environment.

“We are anticipating great advances to our equity and exchange traded fund markets with the development of the AEMI system and we fully expect to qualify as an automated trading system under Regulation NMS,” said Neal Wolkoff, chairman and CEO. “AEMI will bring the Amex to the forefront of technology and make it an even more competitive marketplace.”