International Securities Exchange Reports Monthly Volume For July 2010

The International Securities Exchange (ISE) today reported average daily volume of 2.5 million contracts in July 2010.

Average daily trading volume for all options contracts decreased 38.7% to 2.5 million contracts in July as compared to 4.1 million contracts during the same period in 2009. Total options volume for the month decreased 41.5% to 53.0 million contracts from 90.6 million contracts in the same year-ago period.

On a year-to-date basis, average daily trading volume of all options decreased 22.5% to 3.2 million contracts traded. Total year-to-date options volume through July 2010 decreased 23.0% to 458.6 million contracts from 595.5 million contracts in the same period last year.

Total Options Volume (Equity, ETF, Index and FX Options)

	Current Month			Year-to-Date
(000s)	Jul-10	Jul-09	% Change	Jul-10	Jul-09	% Change
ISE Average Daily Volume	2,523.1	4,119.3	-38.7%	3,162.5	4,078.5	-22.5%
ISE Total Volume	52,985.0	90,623.5	-41.5%	458,568.4	595,460.5	-23.0%
Industry Average Daily Volume	13,208.1	13,898.7	-5.0%	15,712.1	14,528.0	8.2%
Market Share	19.1%	29.6%	(10.5) pts	20.1%	28.1%	(8.0) pts
Market Share: Customer	18.1%	31.6%	(13.5) pts	20.7%	30.1%	(9.4) pts
Market Share: Firm	18.5%	26.8%	(8.3) pts	18.1%	25.8%	(7.7) pts
Market Share: Market Maker	20.3%	28.7%	(8.4) pts	20.3%	27.0%	(6.7) pts

Equity and ETF Options Volume Statistics

	Current Month			Year-to-Date
(000s)	Jul-10	Jul-09	% Change	Jul-10	Jul-09	% Change
ISE Average Daily Volume	2,478.4	4,057.3	-38.9%	3,108.5	4,024.1	-22.8%
ISE Total Volume	52,046.6	89,260.6	-41.7%	450,727.4	587,513.4	-23.3%
Industry Average Daily Volume	12,241.0	12,988.6	-5.8%	14,483.3	13,580.7	6.6%
Market Share	20.2%	31.2%	(11.0) pts	21.5%	29.6%	(8.1) pts
Market Share: Customer	18.8%	33.0%	(14.2) pts	21.7%	31.6%	(9.9) pts
Market Share: Firm	20.7%	28.8%	(8.1) pts	20.4%	27.8%	(7.4) pts
Market Share: Market Maker	21.5%	30.3%	(8.8) pts	21.6%	28.5%	(6.9) pts

Index Options Volume Statistics

	Current Month			Year-to-Date
(000s)	Jul-10	Jul-09	% Change	Jul-10	Jul-09	% Change
ISE Average Daily Volume	43.1	61.2	-29.6%	52.6	53.0	-0.8%
ISE Total Volume	905.0	1,346.2	-32.8%	7,634.0	7,732.7	-1.3%
Industry Average Daily Volume	965.5	909.3	6.2%	1,227.4	945.9	29.8%
Market Share	4.5%	6.7%	(2.2) pts	4.3%	5.6%	(1.3) pts

ISE FX Options® Volume Statistics

	Current Month			Year-to-Date
(000s)	Jul-10	Jul-09	% Change	Jul-10	Jul-09	% Change
ISE Average Daily Volume	1.6	0.8	100.0%	1.4	1.5	-6.7%
ISE Total Volume	33.4	16.7	100.0%	206.9	214.4	-3.5%

ISE's market share statistics continue to be negatively impacted by dividend trade strategies that are permitted based on a non-economic rationale. These trades temporarily inflate and distort trading volume and market share when transacted.

If the volume from dividend trades were excluded from ISE's data for July 2010, our market share in equity options would increase to 20.5% from 20.2%, an increase of 0.3 market share points. Exclusion of dividend trades from total industry volume data presents a more relevant measure of the relative trends in our business. For ISE's whitepaper on dividend trades and their impact on the options industry, please visit www.ise.com/dividendtrades.

Monthly Highlights

On July 19, 2010, ISE introduced Do Not Route (DNR) orders for both priority and professional customers. This new order type allows ISE's customers to indicate that they want to cancel their options orders rather than have them routed to another exchange if the National Best Bid or Offer (NBBO) is not posted at ISE.

ISE traded more volume than any other options exchange in 650 of 2,286 issues in its listings.