On a year-to-date basis, average daily volume increased 21.4% to 1.7 million contracts traded as compared to 1.4 million contracts traded in the prior year. Total equity options volume increased 22.0% to 316.1 million contracts versus 259.0 million contracts in the same period last year.
| Current Month | Year-to-Date | |||||
| (000s) | Sep-05 | Sep-04 | % Change |
Sep-05 | Sep-04 |
% Change |
| ISE Average Daily Volume | 1,865.0 | 1,258.1 | 48.2% | 1,672.2 | 1,377.6 | 21.4% |
| ISE Total Volume | 39,165.9 | 26,419.2 | 48.2% | 316,051.9 | 258,994.8 | 22.0% |
| Industry Average Daily Volume | 5,720.3 | 3,708.1 | 54.3% | 5,114.6 | 4,164.4 | 22.8% |
| Market Share | 32.6% | 33.9% | (1.3) pts | 32.7% | 33.1% | (0.4) pts |
Monthly Highlights
-- ISE established a new monthly average daily volume trading record of 1.9
million contracts and new monthly record of 39.2 million contracts traded.
-- ISE was the largest U.S. equity options exchange in September.
-- ISE traded more volume in 544 of 789 issues in its listings than any other
options exchange.
-- ISE was the lead market in September in the component equities of the following
indexes and accounted for at least 68% of the total weighting in each index:
Dow Jones Industrial Average: 25 of 30 equities which represented 85% of the total weighting of the index. S&P 500: 259 of 500 equities which represented 72% of the total weighting of the index. Russell 1000: 336 of 1,000 equities which represented 68% of the total weighting of the index.
