News Release

NYMEX Announces Margins for New Diesel and Gasoline Futures Contracts

Fri May 11 2007

NEW YORK, N.Y., May 11, 2007 — The New York Mercantile Exchange, Inc. today announced margin rates for its new diesel and gasoline futures contracts that will begin trading on May 13 for trade date May 14.

Margins for the New York Harbor ultra low sulfur diesel and Gulf Coast ultra low sulfur diesel futures contracts will be $4,250 for clearing members, $4,675 for members, and $5,738 for customers. Margins for the Gulf Coast gasoline futures contract will be $4,000 for clearing members, $4,400 for members, and $5,400 for customers.

The intra-commodity spread margins for the New York Harbor ultra low sulfur diesel and Gulf Coast ultra low sulfur diesel futures contracts will be $480 for clearing members, $528 for members, and $648 for customers. The intra-commodity spread margins for the Gulf Coast gasoline futures contract will be $500 for clearing members, $550 for members, and $675 for customers.

Spot assessment margins for the new contracts will be $3,000 for clearing members, $3,300 for members, and $4,050 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: Anu Ahluwalia , 212-299-2439 or  Keil Decker, 212-299-2209

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