NYSE Euronext said its average daily volume in derivatives contracts increased 17.5% in July, worldwide, versus a year ago.

But the exchange operator and technology supplier said its volume in derivatives fell 13.6% from a month ago. And its volume in equities transactions in the United States fell, both year-over-year and month-against-previous month.

Volume in cash products on its New York Stock Exchange, NYSE Arca and NYSE Amex markets hit 2.6 billion shares a day in July. That is a decrease of 7.2%, compared to July of 2009 and a decrease of 12.6% compared to June of this year.

NYSE Euronext’s Tape A matched market share in July 2010 was 37.6%, up from 36.6% in July 2009, but down from 38.8% in June 2010.

European cash products reached 1.4 million transactions a day in July 2010, up 19.5% compared to July 2009. That, though, was a decrease of 9.5% from June 2010.

European derivatives products increased 11.1% compared to July 2009, reaching 4.0 million contracts. But that was down 16.4% from June 2010.

Total European fixed income products in July 2010 were 2.0 million contracts a day, up 25.2% compared to July 2009 and up 4.8 percent from June 2010.

U.S. equity options trading recorded 3.1 million contracts in July 2010, up 26.8% compared to July 2009 levels, but down 9.7% from June 2010.

Earier this week, IntercontinentalExchange, which operates regulated global exchanges, clearing houses and over-the-counter markets, said its average daily volume in futures reached 1,392,397 contracts, up 36% from the second quarter of 2009.

And MarketAxess Holdings, the operator of an electronic trading platform for U.S. and European bonds, said its total monthly trading volume for July 2010 was $30.3 billion, consisting of $18.0 billion in U.S. high-grade volume, $3.4 billion in eurobond volume, and $8.9 billion in other volume.

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