News Release

Exchange to Increase Margins for Natural Gas Basis Swap Futures Contracts

Fri Jan 06 2006

NEW YORK, N.Y., January 6, 2006 — The New York Mercantile Exchange, Inc., today announced that it will increase the margins on its natural gas basis swap futures contracts, effective at the close of business on Monday.

Margins for the first month of the Texas Gas Zone SL basis swap futures contract will increase to $500 from $75 for clearing members, to $550 from $83 for members, and to $675 from $101 for customers. Margins for all other months will increase to $200 from $50 for clearing members, to $220 from $55 for members, and to $270 from $68 for customers.

Margins for the SONAT Louisiana basis swap and Transco Zone 4 basis swap futures contract will increase to $125 from $75 for clearing members, to $138 from $83 for members, and to $169 from $101 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

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