News Release

Exchange to Expand Listed Months for Natural Gas Calendar Spread Options

Mon May 01 2006

NEW YORK, N.Y., May 1, 2006 — The New York Mercantile Exchange, Inc. today announced that it will list an option on the October 2007 / January 2008 intermonth spread for natural gas calendar spread options contracts, beginning tomorrow.

This is in addition to the current listing of 24 consecutive options on one-month spreads. Options on spreads between the first and third nearby months, the first and fourth nearby months, the second and fourth nearby months, as well as the spreads between the first nearby June to the first nearby December, first nearby December to first nearby June, the first nearby December to the second nearby December, first nearby October to the first nearby January, the first nearby April to the second nearby October and the first nearby October to the second nearby April contracts will continue to be listed for natural gas calendar spread options.

# # #

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

Corporate Communications

+1 312 930 3434