CBOE Holdings, Inc. (NASDAQ: CBOE) today announced that for a second consecutive trading day, trading volume at Chicago Board Options Exchange (CBOE) reached a new all-time high. The reported 10,856,041 options contracts that changed hands during today's trading session slightly exceeded the 10,825,600 contracts traded on Friday, August 5.
Three of the top six most-active trading days in CBOE's 38-year history have occurred during the last four trading sessions:
| #1) | Monday, August 8, 2011: 10,856,041 contracts |
| #2) | Friday, August 5, 2011: 10,825,600 contracts |
| #3) | May 6, 2010: 10,571,568 contracts |
| #4) | May 20, 2010: 10,191,893 contracts |
| #5) | September 18, 2008: 9,975,464 contracts |
| #6) | Thursday, August 4, 2011: 9,861,428 contracts |
