News Release

NYMEX to Change Margins for Petroleum Spread Swap Futures Contract on NYMEX ClearPort®

Tue Nov 21 2006

New York, N.Y., November 21, 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 on November 27.

Margins for the first month of the New York Harbor gasoline vs. NYMEX gasoline spread swap futures contract will decrease to $500 from $3,000 for clearing members, to $550 from $3,300 for members, and to $675 from $4,050 for customers.

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