With natural gas futures prices reaching a five-month low Friday, the New York Mercantile Exchange Inc. (Nymex) on Tuesday announced margin decreases for its natural gas futures, Henry Hub swap futures, Henry Hub penultimate swap futures, Nymex miNY natural gas futures and Henry Hub swing swap futures contracts, effective with the close of business Wednesday.

Since the warm weather trend hit in mid-December, February natural gas has plummeted from a high of $15.780 on Dec. 13, 2005 to an intraday low of $8.740 on Jan. 13, marking a $7.040 swing in exactly one month. Friday’s $8.791 settle marked a five-month prompt month low for a close.

Nymex said the margins on the first two months of the natural gas futures contract will decrease to $9,000 from $12,000 for clearing members, to $9,900 from $13,200 for members, and to $12,150 from $16,200 for customers. Margins for the third month will decrease to $6,500 from $8,000 for clearing members, to $7,150 from $8,800 for members, and to $8,775 from $10,800 for customers. Margins for all other months will remain unchanged.

The margin rates on the first two months of the Henry Hub swap and Henry Hub penultimate swap futures contracts will decrease to $2,250 from $3,000 for clearing members, to $2,475 from $3,300 for members, and to $3,038 from $4,050 for customers. Margins for the third month will decrease to $1,625 from $2,000 for clearing members, to $1,788 from $2,200 for members, and to $2,194 from $2,700 for customers. Margins on all other months will remain unchanged.

Margins for the first two months of the Nymex miNY natural gas futures contract will decrease to $2,250 from $3,000 for clearing members, to $2,475 from $3,300 for members, and to $3,038 from $4,050 for customers.

Margins for the first month of the Henry Hub swing swap futures contract will decrease to $2,250 from $3,000 for clearing members, to $2,475 from $3,300 for members, and to $3,038 from $4,050 for customers.

Nymex also reported Tuesday that it set a number of trading volume records in 2005. The exchange posted an annual volume record of 204,611,147 contracts in 2005, shattering the previous record of 163,122,155 contracts set in 2004. The annual total includes a record 166,608,252 exchange-wide futures contracts and a record 38,002,895 exchange-wide options contracts, which surpassed the 2004 records of 133,248,596 futures contracts and 29,873,559 options contracts.

During the year, total energy futures contracts traded reached 112,306,937, topping the 2004 record of 96,994,298 contracts changing hands.

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