News Release

Margin Rate Changes for the Clearport® Petroleum Product & Spread Futures Contracts

Mon Sep 26 2005

NEW YORK, N.Y., September 26, 2005 — The New York Mercantile Exchange, Inc., today announced margin increases for its Gulf Coast Gasoline vs. Gulf Coast heating oil spread swap, Gulf Coast Jet vs. New York Harbor No. 2 heating oil spread swap, New York Harbor unleaded gasoline vs. New York Harbor No. 2 heating oil spread swap, Gulf Coast No. 2 heating oil crack spread swap, Gulf Coast unleaded 87 gasoline crack spread swap, No. 2 heating oil up–down spread swap, unleaded 87 gasoline up–down spread swap , Gulf coast gasoline calendar swap, Gulf Coast heating oil calendar swap, Gulf Coast jet fuel calendar swaps, NY Harbor heating oil crack spread calendar swap and, NY Harbor gasoline crack spread calendar swap futures contracts, effective at the close of business September 27.

Margins on first month of the NY Harbor heating oil crack spread calendar swap futures contracts will increase to $4,375 from $3,500 for clearing members; to $4,813 from $3,850 for members; and to $5,906 from $4,725 for customers. The margins on the second through sixth month will increase to $4,025 from $3,413 for clearing members; to $4,428 from $3,754 for members; and to $5,434 from $4,608 for customers. Margins on the 7th through 11th month will increase to $3,675 from $3,238 for clearing members; to $4,043 from $3,562 for members; and to $4,961 from $4,371 for customers. The margins on all other months will increase to $2,800 from $2,363 for clearing members; to $3,080 from $2,599 for members; and to $3,780 from $3,190 for customers.

The margins on No. 2 heating oil up–down spread swap futures contracts will increase to $675 from $500 for clearing members; to $743 from $550 for members; and to $911 from $675 for customers.

Margins on unleaded 87 gasoline up–down spread swap futures contracts will increase to $1,500 from $725 for clearing members; to $1,650 from $798 for members; and to $2,025 from $979 for customers.

Margins on the Gulf Coast gasoline calendar swap futures contracts will increase to $7,000 from $6,000 for clearing members; to $7,700 from $6,600 for members; and to $9,450 from $8,100 for customers.

The margins on the Gulf coast heating oil calendar swap futures contracts will increase to $6,000 from $4,500 for clearing members; to $6,600 from $4,950 for members; and to $8,100 from $6,075 for customers.

The margins on the Gulf Coast Jet Fuel calendar swap futures contracts will increase to $5,500 from $4,500 for clearing members; to $6,050 from $4,950 for members; and to $7,425 from $6,075 for customers.

Margins on the NY Harbor Gasoline Crack Spread Calendar Swap futures contracts will increase to $5,500 from $4,550 for clearing members; to $6,050 from $5,005 for members; and to $7,425 from $6,143 for customers.

The margins on the Gulf Coast No. 2 heating oil crack spread swap futures contracts will increase to $3,500 from $3,150 for clearing members; to $3,850 from $3,465 for members; and to $4,725 from $4,253 for customers.

Margins on the Gulf Coast unleaded 87 gasoline crack spread swap futures contracts will increase to $4,025 from $4,675 for clearing members; to $4,428 from $4,043 for members; and to $5,434 from $4,961 for customers.

The margins on the New York Harbor unleaded gasoline vs. New York Harbor No. 2 heating oil spread swap futures contracts will increase to $4,500 from $3,500 for clearing members; to $4,950 from $3,850 for members; and to $6,075 from $4,725 for customers.

Margins on the Gulf Coast gasoline vs. Gulf Coast heating oil spread swap futures contracts will increase to $3,125 from $2,625 for clearing members; to $3,438 from $2,888 for members; and to $4,219 from $3,544 for customers.

The margins on the Gulf Coast Jet vs. New York Harbor No. 2 heating oil spread swap futures contracts will increase to $700 from $500 for clearing members; to $770 from $550 for members; and to $945 from $675 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.

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