NEW YORK, N.Y., July 14, 2005 — The New York Mercantile Exchange, Inc., today announced that it will postpone the migration of its NYMEX miNY^sm crude oil and natural gas futures contracts to NYMEX ClearPort® from the CME® Globex® electronic trading platform to August 22.

The September NYMEX miNY^sm crude oil and natural gas futures contracts will be listed for trading on the CME Globex platform beginning today at 3:15 PM EST. The September NYMEX miNY^sm crude oil futures contract will expire on the CME Globex platform at 2:30 PM EST on August 19.

The September NYMEX miNY^sm natural gas futures contract be will delisted on the CME Globex platform at 2:20 PM EST on August 19 and will be listed for trading on NYMEX ClearPort® at 7 PM EST on August 21 for the trade date August 22.

The October NYMEX miNY^sm crude oil and natural gas futures contracts will also be listed for trading on NYMEX ClearPort® at 7:00 PM EST on August 21 for the trade date August 22.

Exchange President James E. Newsome said, "We have been very gratified by the unprecedented growth in volumes we have seen in the e–miNY futures contracts in recent months. We are delaying the migration of these products onto NYMEX ClearPort® to ensure that all of our customers have sufficient time to establish connectivity and to review and execute the applicable user documentation."

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.