News Release

NYMEX to Change Margins for Emissions Futures Contract

Wed Dec 06 2006

NEW YORK, N.Y., December 6, 2006 — The New York Mercantile Exchange, Inc. today announced margin changes for one of its emissions futures contracts on NYMEX ClearPort® beginning at the close of business tomorrow.

Margins for the sulfur dioxide emissions futures contract will increase to $3,500 from $3,000 for clearing members, to $3,850 from $3,300 for members, and to $4,725 from $4,050 for customers.

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