News Release

NYMEX to Change Margins for Gasoline and Related Futures Contracts

Wed Mar 15 2006

NEW YORK, N.Y., March 15, 2006 — The New York Mercantile Exchange, Inc., announced that it will change margins for the unleaded gasoline, NYMEX miNYTM gasoline, and New York Harbor gasoline calendar swap futures contracts, effective at the close of business tomorrow.

Margins for the first month of the unleaded gasoline futures and New York Harbor gasoline calendar swap futures contracts will increase to $5,500 from $4,500 for clearing members; to $6,050 from $4,950 for members; and to $7,425 from $6,075 for customers. The margins for the second through fifth months will increase to $5,000 from $4,500 for clearing members; to $5,500 from $4,950 for members; and to $6,750 from $6,075 for customers. Margins on all other months will remain unchanged.

Intra–commodity spread margins for the first month of the unleaded gasoline futures contract will decrease to $250 from $500 for clearing members; to $275 from $550 for members; and to $338 from $675 for customers. The intra–commodity spread margins for the second through fifth months will decrease to $250 from $300 for clearing members; to $275 from $330 for members; and to $338 from $405 for customers. Intra–commodity spread margins for all other months will be $200 for clearing members; $220 for members; and $270 for customers.

Intra–commodity spread margins for the first month of the New York Harbor gasoline calendar swap futures contract will decrease to $250 from $480 for clearing members; to $275 from $528 for members; and to $338 from $648 for customers. The margins for the second through fifth months will be $250 for clearing members; $275 for members; and $338 for customers. Margins on all other months will be $200 for clearing members; $220 for members; and $270 for customers.

Margins for the NYMEX miNYTM futures contract will increase to $2,750 from $2,250 for clearing members; to $3,025 from $2,475 for members; and to $3,713 from $3,038 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: Brenda Guzman, 212-299-2436

Corporate Communications

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