Effective immediately, for clearing member firms using CLS to facilitate their currency deliveries the following deadline to match CLS transactions will be in place.

Monday, June 19, 2006

11:00 a.m.         Firms enter their currency intentions into Clearing 21 Release 2 for all currencies except Canadian Dollar and begin     entering their CLS transactions.

3:00 p.m.          CME sends CLS messages.

Tuesday, June 20, 2006

8:00 a.m.          Firms make necessary changes to currency intentions and CLS transactions.

9:00 a.m.          CME sends “new” CLS messages.

10:00 a.m.         Firms enter their currency intentions in Clearing 21 Release 2 and CLS transactions for Canadian Dollar.

11:00 a.m.         Any clearing member firm who has a CLS transaction that is not matched with the exception of Canadian Dollar will be required to begin preparing Orders-to-Pay for their currency intentions.

12 noon CME send Canadian Dollar CLS messages.

12:30 p.m.         Any clearing member firm who has a Canadian Dollar CLS transaction that is not matched will be required to begin preparing Orders-to-Pay for their Canadian Dollar delivery.

1:00 p.m.          ALL CLS transactions must be matched. Any clearing member who is not matched by 1:00 p.m. will no longer be able to deliver using the CLS method and will be required to submit banking instructions to CME by 2:00 p.m. to facilitate their deliveries.

If there are any questions or concerns, please contact Deliveries at (312) 930-3172.