News Release

NYMEX Announces Margins for Dubai Mercantile Exchange Futures Contracts

Thu May 24 2007

NEW YORK, N.Y., May 24, 2007 — The New York Mercantile Exchange, Inc. today announced margin rates for the new Dubai Mercantile Exchange contracts that will begin trading on June 1.

Margins for the Oman crude oil futures contract will be $3,450 for DME clearing members, $3,795 for DME or NYMEX members, and $4,658 for customers. Margins for the WTI–Oman financial spread futures contract will be $1,550 for DME clearing members, $1,705 for DME or NYMEX members, and $2,093 for customers Margins for the Brent–Oman financial spread futures contract will be $1,450 for DME clearing members, $1,595 for DME or NYMEX members, and $1,958 for customers.

The intra–commodity spread margins for the first month of the Oman crude oil futures contract will be $400 for DME clearing members, $440 for DME or NYMEX members, and $540 for customers. The intra–commodity spread margins for the second to fifth months will be $250 for DME clearing members, $275 for DME or NYMEX members, and $338 for customers. Intra–commodity spread margins for the sixth to 12th months will be $150 for DME clearing members, $165 for DME or NYMEX members, and $203 for customers. Intra–commodity spread margins for all other months will be $100 for DME clearing members, $110 for DME or NYMEX members, and $135 for customers.

Intra-commodity spread margins for the WTI–Oman and Brent–Oman financial spread futures contracts will be $100 for DME clearing members, $110 for DME or NYMEX members, and $135 for customers.

Spot assessment margins for the Oman crude oil futures contract will be $3,000 for clearing members, $3,300 for members, and $4,050 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.

Contact: Anu Ahluwalia , 212-299-2439 or  Keil Decker, 212-299-2209

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