News Release

NYMEX to Change Margins on Gasoline Futures Contracts

Tue Apr 18 2006

NEW YORK, N.Y., April 18, 2006 — The New York Mercantile Exchange, Inc., today announced margin changes for its unleaded gasoline, NYMEX miNYTM gasoline, New York Harbor gasoline calendar swap, and New York Harbor gasoline blendstock futures contracts, as of the close of business on April 19.

Margins for the first month of the unleaded gasoline, New York Harbor gasoline calendar swap, and New York Harbor gasoline blendstock futures contracts will increase to $6,000 from $5,500 for clearing members, to $6,600 from $6,050 for members, and to $8,100 from $7,425 for customers. The margins on the second through fifth months will increase to $5,500 from $5,000 for clearing members, to $6,050 from $5,500 for members, and to $7,425 from $6,750 for customers. Margins on all other months will remain unchanged.

The margins on the NYMEX miNYTM gasoline futures contract will increase to $3,000 from $2,750 for clearing members, to $3,300 from $3,025 for members, and to $4,050 from $3,713 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

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