By Debbie Cai 
 

Program-trading activity and overall volume increased sharply on the New York Stock Exchange last week, the latest statistics from NYSE Euronext (NYX) showed.

Daily program-trading volume for the week ended June 21 was 791.2 million shares, or 35.1% of the average daily volume. In the prior week, program-trading volume was 347.1 million shares, or 24.2% of the average daily volume.

Total average daily volume in the latest week was about 2.26 billion shares, down from 1.43 billion shares the week earlier.

The most active NYSE-member firm for program trading last week was Goldman Sachs Group Inc. (GS), followed by Morgan Stanley (MS), and Barclays PLC's (BCS, BARC.LN) Barclays Capital Inc.

Program trading encompasses a wide range of portfolio-traded strategies involving the purchase or sale of a basket of at least 15 stocks.

Write to Debbie Cai at debbie.cai@dowjones.com

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