NEW YORK, July 17 (Xinhua) -- The Chicago Board Options Exchange (CBOE) announced Tuesday its unaudited pre-tax profit rose 95 percent in the first half of this year.

The exchange's period pro-tax profit in the second quarter ending on June 30 was 32.2 million dollars, compared to pre-tax profit of 23.7 million dollars during the same period a year ago, it said in a news release reaching here.

Net income for the second quarter was 18.7 million dollars, compared to 14.2 million dollars during the second quarter in 2006.

CBOE's average daily volume during April, May and June was 3.5 million contracts, compared to 2.9 million contracts during the same three-month period of 2006.

Year-to-date, CBOE is reporting a pre-tax profit of 62.5 million dollars on average daily volume of 3.4 million contracts per day.

During the same period last year, CBOE reported a pre-tax profit of 32.0 million dollars on average daily volume of 2.7 million contracts per day.

"We are very pleased with our financial results for the first half of 2007, which show a 95 percent increase in pre-tax profits compared to the same period last year, and a 26 percent increase in volume," said CBOE Chairman and CEO William J. Brodsky.

During the second quarter of 2007, CBOE recorded revenues of 84.6 million dollars, compared to 70.5 million dollars for the same quarter last year.

Year-to-date, gross revenue totaled 162.5 million dollars, compared to 129.7 million dollars for the same period in 2006.