News Release

Exchange Increases Margins for Crude Oil Futures Contracts

Tue Aug 30 2005

NEW YORK, N.Y., August 30, 2005 — The New York Mercantile Exchange, Inc., today announced margin increases for the light, sweet crude oil, WTI calendar swap, Brent crude oil, Brent crude oil calendar swap and light, NYMEX miNYsm crude oil futures contracts, effective at the close of business today.

The margins for the October 2005 to July 2006 contract months for the light, sweet crude oil, WTI calendar swap, Brent crude oil, and Brent crude oil calendar swap futures contracts will increase to $4,500 from $3,500 for clearing members; to $4,950 from $3,850 for members; and to $6,075 from $4,725 for customers.

The margins for the October 2005 to July 2006 contracts months for the NYMEX miNYsm crude oil futures contract will increase to $2,250 from $1,750 for clearing members; to $2,475 from $1,925 for members; and to $3,038 from $2,363 for customers.

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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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