International Securities Exchange Has Record Month - New High Volume & Market Share

The ISE announced today that it established volume and market share records during May, further solidifying its position as an industry leader and the third largest of the five U.S. options exchanges. These records are particularly notable in that industry volume has decreased while ISE has continued to expand.

ISE's average daily volume during May was a record 543,114 contracts, an increase of 6% from the previous month's average volume (512,026 contracts) and a 137% increase from May 2001 (228,993 contracts). In addition, ISE's market share of all equity options was a record 21.0%, compared to 7.8% for May of 2001; this represents the highest such market share attained by ISE since the launch of trading. In addition, ISE's market share in the issues that it lists was 23% during May, also a new monthly record.