News Release

NYMEX to Change Margins for Natural Gas Basis Swap Futures Contracts

Fri Dec 07 2007

NEW YORK, N.Y., December 7, 2007 -- The New York Mercantile Exchange, Inc. today announced margin changes for some of its natural gas basis swap futures contracts, beginning at the close of business on December 10.

Margins for the Waha basis swap, PG&E Citygate basis swap, Ventura basis swap, and Permian basis swap futures contracts will increase to $800 from $500 for clearing members, to $880 from $550 for members, and to $1,080 from $675 for customers.

The margins for the NGPL Texok basis swap futures contract will increase to $600 from $400 for clearing members, to $660 from $440 for members, and to $810 from $540 for customers.

Margins for the Northern natural gas Demarcation basis swap futures contract will increase to $700 from $500 for clearing members, to $770 from $550 for members, and to $945 from $675 for customers.

 
The margins for the Panhandle basis swap futures contract will increase to $600 from $500 for clearing members, to $660 from $550 for members, and to $810 from $675 for customers.
 
Margins for the Centerpoint basis swap futures contract will increase to $500 from $400 for clearing members, to $550 from $440 for members, and to $675 from $540 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 or Keil Decker, 212-299-2209 

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