CBOT 10-YEAR TREASURY NOTE ELECTRONIC OPTIONS ON FUTURES SET DAILY VOLUME RECORD; TOTAL EXCEEDS 150,000 FOR THE FIRST TIME Exchange Also Sets Volume Records For Total Electronic Options and Total Electronic Financial Options CHICAGO, IL, June 16, 2006 â The Chicago Board of Trade (CBOT®) announced today that its electronically traded 10-Year Treasury Note options on futures contract set a record yesterday, as volume surpassed 150,000 contracts at the close of trading. The new record is 26 percent greater than its predecessor, set on June 2 of this year. The record for 10-Year electronic options also contributed to daily volume records for total electronic options contracts and total electronic financial options contracts traded on e-cbot®. The new high mark for CBOT electronic options now stands at 180,155 contracts, surpassing the previous record of 172,429 contracts set May 12, 2006. And the new record for electronic financial options is 175,009 contracts, surpassing the prior record of 166,148 contracts, also set on May 12, 2006. Electronic trading of financial options contracts represented 29 percent of yesterdayâs total volume of financial options traded at the Exchange. For more information on the CBOT and its products, please visit www.cbot.com.