News Release

NYMEX to Chagne Margins for Petroleum Products Futures Contracts on NYMEX Clearport®

Wed Dec 06 2006

NEW YORK, N.Y., December 6, 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 on Friday.

The margins for the Brent-Dubai swap futures contract will increase to $700 from $600 for clearing members, to $770 from $660 for members, and to $945 from $810 for customers.

Margins for the European gasoil 0.2 CIF Northwest Europe vs. gasoil futures contract will decrease to $2,000 from $2,750 for clearing members, to $2,200 from $3,025 for members, and to $2,700 from $3,713 for customers.

The margins for the European ULSD 50 PPM CIF Mediterranean vs. gasoil futures contract will decrease to $12,000 from $15,000 for clearing members, to $13,200 from $16,500 for members, and to $16,200 from $20,250 for customers.

Margins for the European gasoil 0.2 FOB Mediterranean vs. gasoil futures swap will increase to $4,500 from $2,750 for clearing members, to $4,950 from $3,025 for members, and to $6,075 from $3,713 for customers.

Margins for the European ULSD 50 PPM CIF Mediterranean swap futures contract will increase to $35,000 from $21,000 for clearing members, to $38,500 from $23,100 for members, and to $47,250 from $28,350 for customers.

Margins for the European gasoil 0.2 Rotterdam barges vs. gasoil futures swap contract will increase 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 gasoil vs. Rotterdam gasoil swap futures contract will decrease to $1,500 from $2,000 for clearing members, to $1,650 from $2,200 for members, and to $2,025 from $2,700 for customers.

The margins for the Gulf Coast jet fuel calendar swap futures contract will decrease to $3,500 from $4,500 for clearing members, to $3,850 from $4,950 for members, and to $4,725 from $6,075 for customers.

Margins for the European jet CIF Northwest Europe vs. gasoil futures swap contract will increase to $7,000 from $5,000 for clearing members, to $7,700 from $5,500 for members, and to $9,450 from $6,750 for customers.

Margins for the European jet Rotterdam barges vs. gasoil futures swap contract will increase to $7,000 from $2,800 for clearing members, to $7,700 from $3,080 for members, and to $9,450 from $3,780 for customers.

The margins for Russian export blend crude oil (REBCO) futures contract will increase to $4,000 from $3,000 for clearing members, to $4,400 from $3,300 for members, and to $5,400 from $4,050 for customers.

The margins for the European Argus gasoline crack spread swap futures contract will increase to $3,000 from $2,650 for clearing members, to $3,300 from $2,915 for members, and to $4,050 from $3,578 for customers.

Margins for RBOB gasoline vs. heating oil swap, WTI-Brent crude oil spread calendar swap, Singapore naphtha swap, RBOB gasoline up-down calendar swap, Singapore fuel oil spread swap, and Tanker Route TD5 West Africa to U.S. Atlantic Coast freight futures contracts 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 RBOB gasoline crack spread swap futures contract will decrease to $3,000 from $4,000 for clearing members, to $3,300 from $4,400 for members, and to $4,050 from $5,400 for customers. Margins for the second to fifth months will decrease to $2,500 from $3,500 for clearing members, to $2,750 from $3,850 for members, and to $3,375 from $4,725 for customers. Margins for all other months 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.

Margins for the first month of the RBOB gasoline financially futures contract will increase to $5,000 from $4,500 for clearing members, to $5,500 from $4,950 for members, and to $6,750 from $6,075 for customers. The margins for all others months will not change.

Margins for the Singapore fuel oil 380cst swap futures contract will decrease to $12,000 from $14,000 for clearing members, to $13,200 from $15,400 for members, and to $16,200 from $18,900 for customers.

Margins for the Singapore gasoil calendar swap futures contract 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.

Margins for the European naphtha swap (Platts) futures contract will increase to $28,000 from $25,000 for clearing members, to $30,800 from $27,500 for members, and to $37,800 from $33,750 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: Anu Ahluwalia, 212-299-2439

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