NEW YORK, N.Y., March 27, 2007 — The New York Mercantile Exchange, Inc. today announced margin changes for the RBOB, RBOB financial, RBOB calendar swap, and NYMEX miNY^TM RBOB futures contracts, beginning at the close of business tomorrow.

Margins for the first month of the RBOB, RBOB financial, and RBOB calendar swap futures contracts will increase to $4,750 from $4,500 for clearing members, to $5,225 from $4,950 for members, and to $6,413 from $6,075 for customers. The margins for the second to eighth months will increase to $4,500 from $4,250 for clearing members, to $4,950 from $4,675 for members, and to $6,075 from $5,738 for customers. Margins for all other months will remain the same.

Margins for the first month of the NYMEX miNY RBOB futures contract will increase to $2,375 from $2,250 for clearing members, to $2,613 from $2,475 for members, and to $3,206 from $3,038 for customers. The margins for the second to eighth months will increase to $2,250 from $2,125 for clearing members, to $2,475 from $2,338 for members, and $3,038 from $2,869 for customers. Margins for all other months will remain unchanged.

Contact: Steffanie Marchese, 299-2455 or  Keil Decker, 212-299-2209