International Securities Exchange Reports Monthly Volume For July 2004

The International Securities Exchange (ISE), the world's largest equity options exchange, reported an increase in July trading volume compared to the same year-ago period.

Volume Statistics

• ISE's equity options market share was 34% in July, a 10% increase compared to 31% for the same year-ago period.
• Overall, in its listings, ISE traded more volume in 490 of its 684 issues than any other options exchange.
• In July, ISE traded 29.3 million equity options contracts, up 24.3% from 23.6 million equity options contracts in the same year-ago period. In June, average daily volume (ADV) in equity options was 1,396,754 contracts, up 30.2% from an ADV of 1,072,696 equity options contracts in the same year-ago period.
• ISE executed more customer volume in its own listings than any other exchange in July.

Monthly Highlights

• ISE was the lead market in July for options on 26 of the 30 stocks in the Dow Jones Industrial Average, which represented 83% of the index's total weighting. ISE was the lead market for options on 259 of the stocks in the Standard & Poor's 500 Index, which represented 69% of the index's total weighting. ISE was the lead market for options on 334 of the 1000 stocks in the Russell 1000 Index, which represented 65% of the index's total weighting.