The New York Stock Exchange today released its weekly program-trading data submitted by its member firms. The report includes trading in all markets as reported to the NYSE for Dec. 26-29.

The data indicated that during Dec. 26-29, program trading amounted to 34.6 percent of NYSE average daily volume of 1,954.7 million shares1, or 676.3 million program shares traded per day.

Program trading encompasses a wide range of portfolio-trading strategies involving the purchase or sale of a basket of at least 15 stocks with a total value of $1 million or more.

For the fourth quarter of 2006, the NYSE’s program-trading report includes profiles of program trading whenever the New York Stock Exchange Composite Index (NYA) moves 160 points or more in a single direction during any one-hour period. During Dec. 26-29, there were no such periods.

In all markets, program trading by member firms averaged 1,447.2 million shares a day during Dec. 26-29. About 46.7 percent of program trading took place on the NYSE, 7.0 percent in non-U.S. markets and 46.3 percent in other domestic markets, including Nasdaq, the American Stock Exchange and regional markets.