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As per the normal review of market volatility to ensure adequate collateral coverage, the Chicago Mercantile Exchange Inc., Clearing House Risk Management staff approved the performance bond requirements for the following products listed below. The rates are effective at the close of business on Monday, November 24th, 2008.

Commodity	Clearing Member / Maintenance Margin	Member Customer Initial Margin	Non-Member Customer Initial Margin
	*New*	*New*	*New*
R2	$6,500	$7,150	$8,775

Intra-Commodity Spread Tiers for R2

Tiers	*New*
1	1st Nearby
2	2nd - 5th Nearby
3	6th - 12th Nearby
4	Greater than 12th Nearby

NYMEX Division Intra-Commodity Spread Margins on R2

Commodity	Clearing Member / Maintenance Margin	Member Customer Initial Margin	Non-Member Customer Initial Margin
	*New*	*New*	*New*
1	$400	$440	$540
2	$250	$275	$338
3	$150	$165	$203
4	$100	$110	$135