According to the New York Stock Exchange, a subsidiary of NYSE Euronext, program trading during 15-19 December amounted to 40.6% of NYSE average daily volume of 3,406.7 million shares1, or 1,383.5 million program shares traded per day. This included program trading associated with the 19 December quarterly expiration of stock-index options, futures and options on index futures.
In all markets, program trading by member firms averaged 3,990.3 million shares a day during 15 – 19 December. About 34.7% of program trading took place on the NYSE, 0.8% in non-U.S. markets and 64.5% in other domestic markets, including Nasdaq, the American Stock Exchange and regional markets.
L.D.