News Release

NYMEX to Change Margins for Petroleum Products, Spread Futures Contracts on NYMEX Clearport®

Fri Mar 03 2006

NEW YORK, N.Y., March 3, 2006 — The New York Mercantile Exchange, Inc., announced that it will change margins for its New York Harbor heating oil crack spread calendar swap, Gulf Coast jet vs. New York Harbor No. 2 heating oil spread swap, New York Harbor conventional gasoline vs. unleaded gasoline spread swap, New York Harbor gasoline vs. New York Harbor heating oil swap, Gulf Coast No. 2 heating oil crack spread calendar swap, Gulf Coast unleaded 87 gasoline crack spread calendar swap, WTI-Brent crude oil spread calendar swap, New York Harbor gasoline crack spread calendar swap, unleaded 87 gasoline up-down spread swap futures contracts, at the close of business on Monday.

Margins for the first month of the New York Harbor heating oil crack spread calendar swap futures contracts will decrease to $3,000 from $4,375 for clearing members; to $3,300 from $4,813 for members; and to $4,050 from $5,906 for customers. The margins for the second through sixth months will decrease to $2,800 from $4,025 for clearing members; to $3,080 from $4,428 for members; and to $3,780 from $5,434 for customers. Margins for the 7th through 11th months will decrease to $2,625 from $3,675 for clearing members; to $2,888 from $4,043 for members; and to $3,544 from $4,961 for customers. The margins on all other months will decrease to $2,450 from $2,800 for clearing members; to $2,695 from $3,080 for members; and to $3,308 from $3,780 for customers.

The margins on the Gulf Coast jet vs. New York Harbor No. 2 heating oil spread swap futures contracts will increase to $1,000 from $700 for clearing members; to $1,100 from $770 for members; and to $1,350 from $945 for customers.

The margins on the New York conventional gasoline vs. unleaded gasoline spread swap futures contracts will increase to $2,000 from $600 for clearing members; to $2,200 from $660 for members; and to $2,700 from $810 for customers.

The margins on the New York Harbor gasoline vs. New York Harbor heating oil swap futures contracts will decrease to $3,000 from $4,500 for clearing members; to $3,300 from $4,950 for members; and to $4,050 from $6,075 for customers.

The margins on the Gulf Coast heating oil crack spread calendar swap futures contracts will decrease to $3,250 from $3,500 for clearing members; to $3,575 from $3,850 for members; and to $4,388 from $4,725 for customers.

The margins for the Gulf Coast unleaded 87 gasoline crack spread swap futures contract will decrease to $3,500 from $4,025 for clearing members; to $3,850 from $4,428 for members; and to $4,725 from $5,434 for customers.

The margins for the WTI-Brent crude oil spread calendar swap futures contract will increase to $750 from $500 for clearing members, to $825 from $550 for members, and to $1,013 from $675 for customers.

Margins on the New York Harbor gasoline crack spread calendar swap futures contracts will decrease to $3,000 from $5,500 for clearing members; to $3,300 from $6,050 for members; and to $4,050 from $7,425 for customers.

Margins on the unleaded 87 gasoline up-down spread swap futures contracts will increase to $3,000 from $1,500 for clearing members; to $3,300 from $1,650 for members; and to $4,050 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: Anu Ahluwalia, 212-299-2439

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