News Release

NYMEX to Change Margins for Gasoline, Heating Oil and Related Futures Contracts

Wed Sep 13 2006

NEW YORK, N.Y., September 13, 2006 — The New York Mercantile Exchange, Inc. announced that it will change margins for several of its heating oil, gasoline and reformulated gasoline futures contracts, effective at the close of business tomorrow.

Margins for the first month of the gasoline (HU), New York Harbor gasoline calendar swap, RBOB gasoline (RB), RBOB gasoline financial (RT), and RBOB calendar swap futures contracts will decrease to $5,000 from $6,000 for clearing members; to $5,500 from $6,600 for members; and to $6,750 from $8,100 for customers. The margins for the second through fifth months will decrease to $4,500 from $5,500 for clearing members; to $4,950 from $6,050 for members; and to $6,075 from $7,425 for customers. Margins on all other months will decrease to $4,000 from $4,500 for clearing members; to $4,400 from $4,950 for members; and to $5,400 from $6,075 for customers.

The margins for the first month of the NYMEX miNYTM RBOB gasoline futures contract will decrease to $2,500 from $3,000 for clearing members; to $2,750 from $3,300 for members; and to $3,375 from $4,050 for customers. Margins for the second through fifth months will decrease to $2,250 from $2,750 for clearing members; to $2,475 from $3,025 for members; and to $3,038 from $3,713 for customers. Margins on all other months will decrease to $2,000 from $2,250 for clearing members; to $2,200 from $2,475 for members; and to $2,700 from $3,038 for customers.

Margins for the first month of the heating oil, New York heating oil calendar swap, and heating oil financial futures contracts will decrease to $4,500 from $5,000 for clearing members; to $4,950 from $5,500 for members; and to $6,075 from $6,750 for customers. The margins for the second through seventh months will decrease to $4,000 from $4,500 for clearing members; to $4,400 from $4,950 for members; and to $5,400 from $6,075 for customers. The margins for the eighth through 10th months will decrease to $3,500 from $4,000 for clearing members; to $3,850 from $4,400 for members; and to $4,725 from $5,400 for customers. Margins on all other months will decrease to $3,000 from $3,500 for clearing members; to $3,300 from $3,850 for members; and to $4,050 from $4,725 for customers.

Margins for the first month of the NYMEX miNYTM heating oil futures contracts will decrease to $2,250 from $2,500 for clearing members; to $2,475 from $2,750 for members; and to $3,038 from $3,375 for customers. The margins for the second through seventh months will decrease to $2,000 from $2,250 for clearing members; to $2,200 from $2,475 for members; and to $2,700 from $3,038 for customers. The margins for the eighth through 10th months will decrease to $1,750 from $2,000 for clearing members; to $1,925 from $2,200 for members; and to $2,363 from $2,700 for customers. Margins on all other months will decrease to $1,500 from $1,750 for clearing members; to $1,650 from $1,925 for members; and to $2,025 from $2,363 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: Brenda Guzman , 212-299-2436

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