CBOE Sets Consecutive Single-Day Volume Records - Friday's Volume Of 4.08 Million Contracts Is The Busiest Trading Day In CBOE History, Breaking The Previous Record Set On Thursday

The Chicago Board Options Exchange (CBOE) announced today that reported total trading volume at CBOE on Friday, April 15th was 4,080,007 contracts, setting a new volume record at CBOE for the busiest single trading day in the Exchange's 32 year history and the first time that trading volume topped four million contracts in a single day. This was the second consecutive day that CBOE set a new single-day trading record as today's volume surpassed yesterday's volume of 2,962,199 contracts traded, the previous all-time record for single-day trading volume at CBOE.

Through the first three months of 2005, CBOE's year-to-date average daily volume has been 1.71 million contracts traded, which is 12% ahead of 2004, a record year at CBOE. For the week of April 11th through 15th, believed to be the busiest trading week in CBOE history, CBOE average daily volume was 2.72 million contracts, an increase of 59% over the 2005 year-to-date average daily volume and 90% higher than 2004's average daily volume of 1.43 million contracts.

CBOE, the world's largest options marketplace and the creator of listed options, is regulated by the Securities and Exchange Commission (SEC). For additional information about the CBOE and its products, visit the CBOE website at: http://www.cboe.com/.