News Release

NYMEX to Change Margins for Petroleum Products Futures Contracts on NYMEX ClearPort®

Thu Nov 09 2006

New York, N.Y., November 9, 2006 -- The New York Mercantile Exchange, Inc. today announced margin changes for some of its petroleum products futures contracts on NYMEX ClearPort® beginning at the close of business tomorrow.

Margins for the first month of the Northwest Europe gasoline swap futures contract will decrease to $33,000 from $35,000 for clearing members, to $36,300 from $38,500 for members, and to $44,550 from $47,250 for customers. The margins for all other months will remain the same.

Margins for the Dubai crude oil calendar swap futures contract will increase to $3,500 from $3,000 for clearing members, to $3,850 from $3,300 for members, and to $4,725 from $4,050 for customers.

The margins for the European ULSD 50PPM CIF Northwest Europe vs. gasoil futures contract will decrease to $7,000 from $8,000 for clearing members, to $7,700 from $8,800 for members, and to $9,450 from $10,800 for customers.Margins for the first month of the New York Harbor heating oil crack spread calendar swap futures contract will increase to $3,500 from $2,500 for clearing members, to $3,850 from $2,750 for members, and to $4,725 from $3,375 for customers. The margins for the second to sixth months will increase to $3,000 from $2,000 for clearing members, to $3,300 from $2,200 for members, and to $4,050 from $2,700 for customers. Margins for the seventh to 11th months remain unchanged. The margins for all other months will increase to $1,500 from $1,200 for clearing members, to $1,650 from $1,320 for members, and to $2,025 from $1,620 for customers

Margins for the Gulf Coast gasoline vs. Gulf Coast heating oil spread and Gulf Coast gasoline calendar swap futures contract will decrease to $4,000 from $5,000 for clearing members, to $4,400 from $5,500 for members, and to $5,400 from $6,750 for customers.

Margins for the Singapore jet kerosene swap futures contract will increase to $3,500 from $3,000 for clearing members, to $3,850 from $3,300 for members, and to $4,725 from $4,050 for customers.

Margins for the Gulf Coast No.6 fuel 3% sulfur swap, Gulf Coast unleaded 87 gasoline crack spread calendar swap, WTI-Brent crude oil spread calendar swap, and Singapore fuel oil spread swap futures contracts 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.

The margins for the New York Harbor residual fuel crack swap futures contract will increase to $2,500 from $2,000 for clearing members, to $2,750 from $2,200 for members, and to $3,375 from $2,700 for customers.

Margins for the Los Angeles jet fuel vs. New York Harbor No. 2 heating oil spread swap futures contract will increase to $1,500 from $900 for clearing members, to $1,650 from $990 for members, and to $2,025 from $1,215 for customers.

Margins for the first month of the New York Harbor gasoline calendar swap futures contract 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 second to fifth months will decrease $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. The margins for 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.

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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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