News Release

NYMEX to Change Margins for Gold, Silver Futures Contracts

Tue May 13 2008

NEW YORK, N.Y., May 13, 2008 -- The New York Mercantile Exchange, Inc. announced today that it will change margins for its gold and silver futures contracts, effective at the close of business tomorrow. 

Gold futures margins will decrease to $3,250 from $4,000 for clearing and non-clearing members and to $4,388 from $5,400 for customers.

Margins for the Asian gold futures contract will decrease to $1,045 from $1,286 for clearing and non-clearing members and to $1,411 from $1,736 for customers.

Margins for the COMEX miNY gold futures contract will decrease to $1,625 from $2,000 for clearing and non-clearing members and to $2,194 from $2,700 for customers.

Silver futures margins will decrease to $5,000 from $5,750 for clearing and non-clearing members and to $6,750 from $7,763 for customers.

Margins for the COMEX miNY silver futures contract will decrease to $2,500 from $2,875 for clearing and non-clearing members and to $3,375 from $3,881 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 or Keil Decker, 212-299-2209

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