Birinyi Associates, which tracks program trading, said traders played heavily on both sides of the market.

Birinyi Associates, a Wall Street research firm that tracks program trading, noted only two sell programs, in the morning.

Birinyi Associates, which tracks program trading, said heavy buying and selling programs raised the Dow less than a point.

Birinyi Associates, which tracks program trading, said heavy computerized buying lifted the Dow close to 20 points.

Birinyi Associates, a research firm that tracks program trading, said two large program-trade sales entered the market near the end.

Birinyi Associates, which tracks program trading, said heavy computerized buying programs raised the Dow 22 points.

Birinyi Associates, which tracks program trading, said a big selling operation and three major buying programs added 18.34 to the Dow.

Birinyi Associates, which tracks program trading, confirmed the suspicion, as it noted that six buy programs during the day had pulled the Dow down 40.92.

Birinyi Associates, a research firm that tracks program trading, said that yesterday was fairly busy.

Birinyi Associates, which tracks program trading, picked up two buying and three selling programs that had a dropped the Dow by about 13 points.