FOR IMMEDIATE RELEASE

CBOT Introduces Market Maker Programs for Options on Two-Year U.S. Treasury Note Futures
Six Electronic Market Makers to Participate

CHICAGO, November 17, 2005 - The Chicago Board of Trade (CBOT) announced today that it has launched two new market maker programs that are designed to support the trading of options on CBOT's Two-Year U.S. Treasury Note futures.

Under the new electronic market marker (EMM) program, participating market makers are expected to provide continuous two-sided quotes and respond to requests-for-quote for options on CBOT's Two-Year U.S. Treasury Note futures traded on its electronic trading platform. The participants in the EMM program currently include Capstone Fixed Income, LLC; Citigroup Corporate and Investment Banking; Consolidated Trading LLC; DRW Investments, LLC; Nico Trading, Inc.; and Optiver US, LLC. The EMM program is effective daily from 7:00 a.m. to 2:00 p.m., Chicago time.

In addition to the EMM program, the CBOT is also launching a new primary market marker (PMM) program for options on CBOT's Two-Year U.S. Treasury Note futures traded on its open auction platform. The participants in the PMM program currently are Citigroup Corporate & Investment Banking and DRW Investments, LLC.? The PMM program is effective daily from 7:20 a.m. to 2:00 p.m., Chicago time.

CBOT Senior Vice President of Business Development Robert Ray said, "The market maker programs are designed to develop liquidity and foster additional growth for our Two-Year U.S. Treasury Note complex.? Overall, we believe that these market maker programs will enable CBOT to expand its leadership position in the trading of fixed income options."

Contact: Jennifer Rook
312-435-3625
news@cbot.com

About the CBOT
As one of the leading global derivative exchanges, the Chicago Board of Trade (CBOT) provides a diverse mix of financial, equity, and commodity futures and options-on-futures products. For more than 157 years, the CBOT continues to advance into the future using the strength of deep liquidity, market integrity, and member-trader expertise. Using superior trading technology in both electronic and open-auction trading platforms, the CBOT provides premier customer service to risk managers and investors worldwide. For more information on the CBOT, visit our web site at www.cbot.com.