News Release

Exchange Announces Margin Rate Changes for Gold and Silver

Mon Nov 28 2005

NEW YORK, N.Y., November 28, 2005 — The New York Mercantile Exchange, Inc., announced today it would change the margins on its gold and silver futures contracts at the close of business on November 30.

Margins rates for the gold futures contract will increase to $1,500 from $1,000 for clearing and non–clearing members and to $2,025 from $1,350 for customers.

Margins rates for the silver futures contract will increase to $1,750 from $1,500 for clearing and non–clearing members and to $2,363 from $2,025 for customers.

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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.

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