News Release

NYMEX to Change Margins for Petroleum Products, Futures, Freight Futures Contracts

Fri Aug 04 2006

New York, N.Y., August 4, 2006 —The New York Mercantile Exchange, Inc. today announced margin changes for some of its petroleum products and spreads futures contracts and freight swap futures contracts on NYMEX ClearPort®, beginning at the close of business on August 7.

Margins for the first month of the Northwest Europe gasoline swap futures contract will decrease to $40,000 from $43,000 for clearing members, to $44,000 from $47,300 for members, and to $54,000 from $58,050 for customers. The margins for all other months will decrease to $39,000 from $41,000 for clearing members, to $42,900 from $45,100 for members, and to $52,650 from $55,350 for customers.

Margins for the European naphtha crack spread swap futures contract will decrease to $2,000 from $2,500 for clearing members, to $2,200 from $2,750 for members, and to $2,700 from $3,375 for customers.

The margins for the first month of the East-West fuel oil spread swap futures contract will increase to $8,000 from $6,000 for clearing members, to $8,800 from $6,600 for members, and to $10,800 from $8,100 for customers. Margins for all other months will remain the same.

The margins for the European ultra low-sulfur diesel 50 PPM CIF Northwest Europe vs. gasoil futures contract will decrease to $10,000 from $13,700 for clearing members, to $11,000 from $15,070 for members, and to $13,500 from $18,495 for customers.

Margins for the Gulf Coast jet fuel vs. New York Harbor No.2 heating oil spread swap futures contract will increase to $1,200 from $1,000 for clearing members, to $1,320 from $1,100 for members, and to $1,620 from $1,350 for customers.

The margins for the WTI-Brent crude oil spread calendar swap futures contract will increase to $1,000 from $750 for clearing members, to $1,100 from $825 for members, and to $1,350 from $1,013 for customers.

Margins for the Singapore fuel oil 380 cst swap futures contract will decrease to $14,000 from $15,000 for clearing members, to $15,400 from $16,500 for members, and to $18,900 from $20,250 for customers.

The margins for the Singapore gasoil calendar swap futures contract will increase to $5,000 from $3,500 for clearing members, to $5,500 from $3,850 for members, and to $6,750 from $4,725 for customers.

Margins for the Tanker Route TD5 West Africa to U.S. Atlantic Coast freight futures contract will increase to $2,500 from $950 for clearing members, to $2,750 from $1,045 for members, and to $3,375 from $1,283 for customers.

The margins for the Tanker Route TD3 Middle Eastern Gulf to Japan freight futures contract will increase to $2,500 from $1,800 for clearing members, to $2,750 from $1,980 for members, and to $3,375 from $2,430 for customers.

Margins for the Tanker Route TC2 Europe to U.S. Atlantic Coast freight futures contracts will increase to $2,500 from $1,500 for clearing members, to $2,750 from $1,650 for members, and to $3,375 from $2,025 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

Corporate Communications

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