Effective for trade date Thursday, September 18, 2008, the CME Group shall list for trading Binary Options on the Target Federal Funds Rate ("Fed Binaries") that expire in March 2009.

The following table summarizes expiration months, last trading days, and expiration days for Fed Binaries listed for trading as of 18 September 2008:

 Expiration Month             Last Trading Day & Expiration
October 2008                       30 October 2008
December 2008                   17 December 2008
January 2009                       29 January 2009
March 2009                          18 March 2009

The schedule for last trading day and expiration of Fed Binaries is governed by CBOT Rule 22B01.I.:

22B01.I. Last Day of Trading

The last day of trading in a Binary Option shall be the business day following the terminal day of the regularly scheduled FOMC meeting that determines the contract expiration month of said Binary Option (Rule 22B01.A.).

The last day of trading for any given Binary Option shall be set by the Exchange on the basis of the most recently published FOMC meeting calendar as of the date that such Binary Option is listed for trading by the Exchange.

The last day of trading for said Binary Option, so determined, shall remain fixed, notwithstanding such changes to the schedule of meetings of the FOMC as may occur after said Binary Option has been listed by the Exchange for trading.

Inquiries should be addressed to:

Daniel Grombacher         312-435-3787         daniel.grombacher@cmegroup.com
Jeff Kilinski                      312-648-3871         jeff.kilinski@cmegroup.com
Frederick Sturm              312-347-5235         fredrick.sturm@cmegroup.com
James Boudreault          312.930.3247          james.boudreault@cmegroup.com