News Release

NYMEX Announces Margins for DME Brent and Oman Crude Oil Financial Futures Contracts

Fri May 30 2008

New York, N.Y., May 30, 2008 --  The New York Mercantile Exchange, Inc. today announced margins for the DME Brent and Oman crude oil financial futures contacts, effective at the close of business on June 2.

Margins for the DME Brent crude oil financial futures contract will be $7,000 for clearing members, $7,700 for members, and $9,450 for customers.

The margins for the DME Oman crude oil financial futures contract will be $7,800 for clearing members, $8,580 for members, and $10,530 for customers.

Intra-commodity margins for the first month of both contracts will be $450 for clearing members, $495 for members, and $608 for customers. The intra-commodity margins for the second to 18th months will be $400 for clearing members, $440 for members, and $540 for customers. Intra-commodity margins for the 19th to 42nd months will be $300 for clearing members, $330 for members, and $405 for customers. The intra-commodity margins for all other months will be $300 for clearing members, to $330 for members, and to $405 for customers.

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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.

Contact: Brenda Guzman, 212-299-2436 or Keil Decker, 212-299-2209

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