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Tim Quast
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July 31, 2004

CBOE Reclaims Spot In Options

By Staff Reports

The Chicago Board Options Exchange (CBOE) and the International Securities Exchange (ISE) have scores to settle. In June, it was the CBOE's turn at the top. That's when it reported the largest total options trading volume in the U.S. The CBOE had 31.66 percent of the volume compared with the ISE's 30.48 percent.

With a market share difference of only about one precent separating them, it was still the widest gap between the two adversaries this year.

The latest numbers are a positive sign for the CBOE, which recently launched a hybrid trading system. The ISE, nevertheless, beat the CBOE in February. The margin was only 0.03 percent. The Boston Options Exchange reported 1.63 percent of options trading volume. The Pacific Exchange was unchanged and had a market share of 7.58 percent. The remaining two options marts fell behind.