NEW YORK, N.Y., April 20, 2006 — The New York Mercantile Exchange, Inc., today announced that it will list five new New York Harbor gasoline blendstock swap futures contracts on NYMEX ClearPort® on April 23 for trade date of April 24.

The new contracts and their commodity codes are: RBOB bullet swap (RT); RBOB calendar swap (RL); RBOB up-down calendar swap (RV); RBOB vs. heating oil swap (RH); and RBOB crack spread swap futures (RM). The RBOB crack spread swap futures contracts is 1,000 barrels in size with a minimum price fluctuation of $0.01 per barrel; all others are 42,000 gallons in size with a minimum price fluctuation of $0.0001 per gallon.

For NYMEX ClearPort® trading of the RBOB bullet and RBOB calendar swap futures contracts, members will be paid $1.00 and non–members will pay $2.50 per contract. NYMEX ClearPort® clearing and the cash settlement fees will be $0.85 for members and $1.35 for non–members.

For NYMEX ClearPort® trading of the RBOB up–down calendar swap, RBOB vs. heating oil swap, and RBOB crack spread swap futures contracts, members will be paid $1.00 and non–members will pay $2.50 per contract. NYMEX ClearPort® clearing and the cash settlement fees will be $1.70 for members and $2.70 for non–members.

All five new contracts are cash–settled. There are four calendar month swaps and one bullet swap contracts that is a futures look–alike instrument which terminates one business day prior to the underlying RBOB futures contract.

All of the contracts will be listed for the current year and the next three years, and a new calendar year will be added following the termination of trading in the December contract of the current year.

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