Market Share Roulette (CORRECTED)
This article is taken from this morning's Options Insider Newsletter, and is updated to reflect a correction in the market share winner.
The amended paragraph is noted below. Our sincere apologies for the error.
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The amended paragraph is noted below. Our sincere apologies for the error.
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The WallStreet Journal reported that U.S. options trading fell 9.3% in Julyfrom a year earlier, when stock trading was notably volatile, accordingto an industry cooperative.
There were 277.4 million optionscontracts traded last month, according to the Options Industry Council,compared with 305.8 million a year ago. Average daily volume was down5%.
When July 2009 results were announced, the month's volume wasthe third-highest monthly total on record as stock markets slid throughthe first half of the month and then climbed sharply. In contrast,stocks finished last month with their best gains in a year.
CORRECTED: Themarket share winner* (for equities) was NASDAQ + PHLX with25.88% of the July volume. Here's how it broke out (click to enlarge):
Here is how things have playedout year-to-date (clickto enlarge):
*Equityvolume reported by OCC and within the charts includes dividend trades,which can dramatically effect market share numbers. For example, seeJuly market share below without dividend trades (statisticsobtained from ISE):
| Exchange | Reported Volume % | Volume % Excluding Dividend Trades |
| AMEX | 12.12% | 12.29% |
| ARCA | 13.18% | 13.31% |
| BATS | 1.20% | 1.22% |
| BOX | 3.20% | 3.25% |
| CBOE | 24.17% | 24.54% |
| ISE | 20.25% | 20.56% |
| NSDQ | 5.43% | 5.52% |
| PHLX | 20.45% | 19.32% |
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