News Release

NYMEX to Launch NYMEX iPortTM 3-2-1 Plus Energy Index Futures Contract

Thu Dec 21 2006

NEW YORK, N.Y., December 21, 2006 — The New York Mercantile Exchange, Inc. announced today that it will launch its first energy index futures contract, 3-2-1 Plus as part of the NYMEX iPortTM suite of index futures contracts beginning on January 21 for trade date January 22, 2007.

The 3-2-1 Plus futures contract will enable traders to manage risk across their energy portfolios with a single contract. It will be available for trading on the NYMEX trading floor and the CME Globex® electronic trading platform and for exchange of futures for swaps (EFS) transactions on NYMEX ClearPort®.

The contract, which will have the code WX, will be cash-settled and comprised of the core NYMEX energy futures contracts, light sweet crude oil, RBOB gasoline, heating oil, and natural gas ratios of 3:2:1:1 respectively, divided by a factor of 10 to obtain the index value.

NYMEX will list the contract for six consecutive months beginning with the March 2007 contract. They will trade from 10:00 Am to 2:30 PM on the NYMEX trading floor; and on CME Globex from 6:00 PM Sunday through 5:15 PM Friday New York time, with a 45-minute break between 5:15 PM and 6:00 PM on Mondays through Thursdays.

For more information, go to www.nymex.com/321plus.

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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.

Contact: Anu Ahluwalia, NYMEX, 212-299-2439 or  Mary Haffenberg, CME, 312-930-3435

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