News Release

Exchange Postpones Migration of NYMEX miNY Futures Contracts

Wed Aug 17 2005

NEW YORK, N.Y., August 17, 2005 — The New York Mercantile Exchange, Inc., announced today that it will postpone the migration of the NYMEX miNYsm crude oil and natural gas contracts from the Chicago Mercantile Exchange® Globex® platform to NYMEX ClearPort® as previously scheduled for August 22. As a result, the October contract month of the NYMEX miNYsm crude oil and natural gas contracts will be listed for trading on the Globex® platform effective 6:00 PM (EST) today.

Exchange President James E. Newsome said, "Testing has been successfully completed, and the Exchange systems are prepared and ready for this transition. In fact, as of today, more than 35 firms have signed up and certified for FIX connectivity to our electronic platform. However, as the Exchange continues to study its strategic alternatives, which includes a review of existing technology initiatives, it has determined that the appropriate course of action at this time is to maintain existing technology arrangements."

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Forward Looking and Cautionary Statements
This press release may contain forward–looking statements within the meaning of the Private Securities Litigation Reform Act, with respect to our future performance, operating results, strategy, and other future events. Such statements generally include words such as could, can, anticipate, believe, expect, seek, pursue, and similar words and terms, in connection with any discussion of future results. Forward–looking statements involve a number of assumptions, risks, and uncertainties, any of which may cause actual results to differ materially from the anticipated, estimated, or projected results referenced in forward–looking statements. In particular, the forward–looking statements of NYMEX Holdings, Inc., and its subsidiaries are subject to the following risks and uncertainties: the success and timing of new futures contracts and products; changes in political, economic, or industry conditions; the unfavorable resolution of material legal proceedings; the impact and timing of technological changes and the adequacy of intellectual property protection; the impact of legislative and regulatory actions, including without limitation, actions by the Commodity Futures Trading Commission; and terrorist activities and international hostilities, which may affect the general economy as well as oil and other commodity markets. We assume no obligation to update or supplement our forward–looking statements.

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