Notice 596
November 21, 2008

Performance Bond Requirement Changes

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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 Friday, November 21st, 2008.

OUTRIGHT MARGIN RATE AND INTRA-SPREAD TIER CHANGES FOR CRUDE OIL FUTURES CONTRACT (CL), FINANCIAL CRUDE OIL CONTRACT (WS), CRUDE OIL CALENDAR SWAP (CS), and NYMEX miNY CRUDE OIL CONTRACT (QM)

Note: The revised margins are in bold

CL/WS/CS Intra -Commodity Spread Tiers

Tiers	*New*	Old
1	1st Nearby	1st Nearby
2	2nd - 12th Nearby	2nd - 13th Nearby
3	13th - 36th Nearby	14th - 37th Nearby
4	Greater than the 36th Nearby	Greater than the 37th Nearby

NYMEX Division Outright (Scan) Margins on Crude Oil Futures Contract (CL),Financial Crude Oil Contract ( WS) and Crude Oil Calendar Swap (CS)

	Clearing Member / Maintenance Margin		Member Customer Initial Margin		Non-Member Customer Initial Margin
	*New*	Old	*New*	Old	*New*	Old
CL (All Other Months)	$7,750	$8,750	$8,525	$9,625	$10,463	$11,813
WS (All Other Months)	$7,750	$8,750	$8,525	$9,625	$10,463	$11,813
CS (All Other Months)	$7,750	$8,750	$8,525	$9,625	$10,463	$11,813

NYMEX Division Outright (Scan) Margins on NYMEY miNY Crude Oil Contract( QM)

	Clearing Member / Maintenance Margin		Member Customer Initial Margin		Non-Member Customer Initial Margin
	*New*	Old	*New*	Old	*New*	Old
QM (All Other Months)	$3,875	$4,375	$4,263	$4,813	$5,231	$5,906

Should you have any questions or require any further information, please contact ExchangeInformation@cmegroup.com