For Second Consecutive Week, CBOE Experiences Record Volume In Options On The S&P 500 Index (SPX) - Volume Of 5.0M Driven By Busiest Single Day Of SPX Trading In CBOE History

The Chicago Board Options Exchange (CBOE) announced that, for the second consecutive week, the Exchange experienced the busiest weekly trading activity for options on the S&P 500 Index (SPX) in CBOE history. Volume during the week of March 12?19, 2007 totaled a reported 5,051,009 contracts traded, besting the previous record of 4.35 million contracts set just a week ago (March 5?9, 2007).

This week's record SPX volume was driven, in part, by the highest single-day of SPX trading in CBOE history when 1,833,022 contracts traded on Wednesday, March 14, 2007, which topped the previous high of 1,287,151 contracts traded on May 19, 2006. Month-to-date, SPX volume stands at 11,235,112 contracts, with an average daily volume of 936,259 contracts traded during March.

During 2006, SPX was CBOE's most-actively traded product with volume totaling a record 104.3 million contracts. SPX average daily volume of 415,588 contracts on the year was an increase of 46% over the previous year. During February 2007, SPX average daily volume at CBOE was 529,671 contracts, up 50% from February 2006.

CBOE, the largest options marketplace in the U.S. 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/.