Effective Sunday, December 17, 2006 (trade date Monday, December 18^th), CME^® will implement a change in CME Globex^® trading hours for the American-style foreign exchange (FX) options listed below. Currently, these options trade on CME Globex from 2:00 p.m. to 7:15 a.m. the following day.  CME will offer side-by-side Open Outcry and electronic trading for these options.  These options will trade on CME Globex from 5:00 p.m. to 4:00 p.m. the following day (the same trading hours as the currently-listed European-style options).  They will continue to trade via Open Outcry from 7:20 a.m. to 2:00 p.m.

Side-by-Side FX Options and Ticker Codes

The FX Options that will be listed for trading side-by-side and their ticker codes are as follows:

• CME Euro FX Options – 6E
• CME Japanese Yen Options – 6J
• CME British Pound Options – 6B
• CME Swiss Franc Options – 6S
• CME Canadian Dollar Options – 6C
• CME Australian Dollar Options – 6A
• CME New Zealand Dollar Options – 6N
• CME Mexican Peso Options – 6M
• CME Russian Ruble Options – 6R

Ticker Testing

Ticker testing on side-by-side FX Options will be held on Friday, December 15, 2006 at approximately 4:45 p.m. Central Time.  If you have any questions during testing, please contact CME’s Enterprise Technology Operations Department at (312) 930-8160.

If you have any questions regarding this notice, please contact:

Marilee Radecki                                  312.930.8193              mradecki@cme.com

Kevin Brady                                        312.648.3653              kbrady@cme.com

Thank you.