TO:	ALL CLEARING PARTICIPANTS
FROM:	CLIENT SERVICES AND SUPPORT
DATE:	March 6, 2007
SUBJECT:	Margin Change for OTC Cleared Treasury Futures

The following margin change will be effective at the close of business March 6, 2007.

Contract	From	To
30 Year Treasury OTC BTF	$1500.00	$1250.00
10 Year Treasury OTC BTF	$900.00	$750.00
5 Year Treasury OTC BTF	$750.00	$500.00
3 Year Treasury OTC BTF	$375.00	$350.00
2 Year Treasury OTC BTF	$250.00	$275.00

Should you have any questions, please call or e-mail one of the following Client Services and Support Representatives: