Automatic Data Processing, Inc. to Withdraw Pacific Exchange Listing, Retains New York Stock Exchange Listing.

ROSELAND, N.J. -- Automatic Data Processing, Inc. (NYSE: ADP) today announced plans to withdraw the listing of its common stock from NYSE Arca, Inc., formerly The Pacific Exchange, Inc. ADP's common stock will continue to be listed on the New York Stock Exchange.

ADP has decided to withdraw its listing from NYSE Arca, Inc. to streamline operations and eliminate duplicative administrative requirements inherent with dual listings as a result of the New York Stock Exchange, Inc.'s recent merger with Archipelago Holdings, Inc., the parent company of NYSE Arca. The withdrawal is expected to be effective within the next month.

ADP does not believe that withdrawing its listing from NYSE Arca, Inc. will have any impact on the liquidity of its common stock. NYSE Arca will continue to trade ADP common stock on an unlisted trading privilege basis.

ADP, with nearly $9 billion in revenues and more than 570,000 clients worldwide, is one of the largest providers of a broad range of premier, mission-critical, cost-effective transaction processing and information-based business solutions.