News Release

Exchange Increases Margins for Crude Oil Futures

Fri Aug 19 2005

NEW YORK, N.Y., August 19, 2005 — The New York Mercantile Exchange, Inc., will increase the margins for several crude oil futures contracts at the close of business on August 22.

Margins for the light sweet crude oil futures, WTI calendar swap futures, Brent crude oil futures, and Brent crude oil calendar swap futures contracts for the October 2005 to July 2006 contract months will increase to $3,500 from $2,500 for clearing members, to $3,850 from $2,750 for members, and to $4,725 from $3,375 for customers.

Margins on the NYMEX miNYsm crude oil futures contract will increase to $1,750 from $1,250 for clearing members, to $1,925 from $1,375 for members, and to $2,363 from $1,688 for customers for the October 2005 to July 2006 contract months.

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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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