Archipelago Holdings, Inc. (PCX: AX) has announced its October 2004 market transaction volume data for the Archipelago Exchange ("ArcaEx"). ArcaEx's total trading market share showed continued growth in both AMEX and NYSE- listed equity securities. Specifically, ArcaEx total trading market share grew from 14.7% in October 2003 to 27.0% in October 2004 in AMEX-listed stocks, and from 1.2% in October 2003 to 2.3% in October 2004 in NYSE- listed stocks. ArcaEx's ETF total monthly share volume also showed continued growth with 1,659.0 (millions of shares) having traded in October 2004 compared to 759.1 (millions of shares) traded in October 2003, resulting in a 118.2% gain.
ArcaEx's total Nasdaq-listed equity security trading market share was down slightly from 26.4% in October 2003 to 25.1% in October 2004. ArcaEx believes this decrease was largely attributable to an overall increase in market trading volume in stocks priced under $5 which are traded in sub-penny increments on other market places.
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