CBOE executed 33.98% of total options volume last month, up from 32.08% in May. The International Securities Exchange executed 26.78% of total order flow, down from 28.17% in May. Overall, the options industry traded 304,003,964 contracts, up 36% over a year ago, according to the Options Industry Council.
CBOE sited several trading volume records set in June in its index options, which the ISE has a limited exposure to. Overall index volumes were up 20% since the previous month and 7% in the last year.
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