News Release

NYMEX to Change Margins for Crude Oil and Petroleum Swap Futures Contracts on NYMEX ClearPort®

Mon May 19 2008

New York, N.Y., May 19, 2008 -- The New York Mercantile Exchange, Inc. today announced margin changes for some of its crude oil and petroleum product swap futures contracts on NYMEX ClearPort, beginning at the close of business tomorrow.

The margins for the first month of the Northwest Europe gasoline swap futures contract will decrease to $60,000 from $65,000 for clearing members, to $66,000 from $71,500 for members, and to $81,000 from $87,750 for customers. Margins for all other months will remain unchanged.

Margins for the European gasoil bullet swap futures contract will decrease to $60,000 from $65,000 for clearing members, to $66,000 from $71,500 for members, and to $81,000 from $87,750 for customers.

The margins for the Chicago ethanol (Platts) swap, Brent-Dubai swap, New York Harbor residual fuel crack swap, and Gulf Coast No. 2 heating oil crack spread calendar swap (Platts) futures contracts will decrease to $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.

Margins for the Dubai crude oil calendar swap contract will decrease to $7,000 from $7,500 for clearing members, to $7,700 from $8,250 for members, and to $9,450 from $10,125 for customers.

Margins for the 1% fuel oil Northwest Europe crack spread swap and 3.5% fuel oil Rotterdam crack swap futures will decrease to $5,500 from $6,000 for clearing members, to $6,050 from $6,600 for members, and to $7,425 from $8,100 for customers.

The margins for the Singapore gasoil vs. Rotterdam gasoil swap, Gulf Coast ultra low sulfur diesel (ULSD) crack spread swap, and Gulf Coast unleaded 87 gasoline crack spread calendar swap futures contracts 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 Gulf Coast heating oil calendar swap, up-down Gulf Coast ultra ULSD vs. NYMEX heating oil spread swap, Gulf Coast jet vs. new York Harbor No. 2 heating oil spread swap (Platts) 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 clearing members.

Margins for the Gulf Coast gasoline calendar swap futures contract will decrease to $9,000 from $10,000 for clearing members, to $9,900 from $11,000 for members, and to $12,150 from $13,500 for customers.

Margins for the European gasoil 10 PPM Rotterdam barges swap futures contract will decrease to $55,000 from $60,000 for clearing members, to $60,500 from $66,000 for members, and to $74,250 from $81,000 for customers.

Margins for the first month of the European gasoil (ICE) calendar swap futures contract will decrease to $55,000 from $60,000 for clearing members, to $60,500 from $66,000 for members, and to $74,250 from $81,000 for customers. Margins for all other months will remain unchanged.

Margins for the European gasoil crack spread swap futures will increase to $5,500 from $5,000 for clearing members, to $6,050 from $5,500 for members, and to $7,425 from $6,750 for customers.

Margins for the European jet CIF Northwest Europe vs. gasoil futures swap futures contract will increase to $20,000 from $15,000 for clearing members, to $22,000 from $16,500 for members, and to $27,000 from $20,250 for customers.

Margins for the Los Angeles CARBOB (OPIS) spread 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.

Margins for the European jet Rotterdam barges vs. gasoil futures swap futures contract will increase to $10,000 from $6,500 for clearing members, to $11,000 from $7,150 for members, and to $13,500 from $8,775 for customers.

Margins for the Los Angeles CARB diesel (OPIS) spread swap futures contract 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.

The margins for the Gulf Coast No. 6 fuel 3.0% sulfur swap (Platts) and Gulf Coast No. 6 fuel oil crack swap (Platts) futures contracts will decrease to $5,000 from $5,500 for clearing members, to $5,500 from $6,050 for members, and to $6,750 from $7,425 for customers.

Margins for the Mt. Belvieu propane (OPIS) swap and the Singapore fuel oil spread swap futures (Platts) futures contracts will increase to $5,000 from $4,000 for clearing members, to $5,500 from $4,400 for members, and to $6,750 from $5,400 for customers.

Margins for the Russian Export Blend crude oil (REBCO) futures contracts will decrease to $7,000 from $7,500 for clearing members, to $7,700 from $8,250 for members, and to $9,450 from $10,125 for customers.

Margins for the New York Harbor conventional gasoline vs. RBOB swap futures contract will increase to $2,000 from $1,500 for clearing members, to $2,200 from $1,650 for members, and to $2,700 from $2,025 for customers.

Margins for the gasoil 10 PPM cargoes CIF Northwest Europe vs. ICE gasoil swap futures contract will decrease to $15,000 from $16,000 for clearing members, to $16,500 from $17,600 for members, and to $20,250 from $21,600 for customers.

Margins for the European 3.5% fuel oil Mediterranean calendar swap futures contract will increase to $16,000 from $15,000 clearing members, to $17,600 from $16,500 for members, and to $21,600 from $20,250 for customers.

Margins for the first month of European naphtha calendar swap futures contract will decrease to $60,000 from $65,000 for clearing members, to $66,000 from $71,500 for members, and to $81,000 from $87,750 for customers. Margins for all other months will decrease to $55,000 from $60,000 for clearing members, to $60,500 from $66,000 for members, and to $74,250 from $81,000 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 or Keil Decker, 212-299-2209

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