ISE's market share in all listed equity and index options products was 20% in November, up 68%, compared to 12% in the same year-ago period. ISE does not currently list any index options.
ISE's November average daily volume was 646,211 contracts, up 81% from 357,268 contracts in the same year-ago period.
For the month, ISE was the lead market in 238 options classes, which means that more volume was executed at ISE in those classes than at any other exchange. International Business Machines, Dell Computer Corp., and Tyco International Ltd. were the most actively traded classes among ISE's lead markets.
