Shares of large pharmaceutical companies closed lower Friday as the broader market tumbled over wider-than-expected losses at insurer American International Group Inc. and a spike in oil prices.
How some key drug makers performed Friday:
Wyeth, down 46 cents to $43.93.
Merck & Co., down 10 cents to $38.99
Bristol-Myers Squibb Co., down $1.08, or 4.7 percent, to $21.71.
Schering-Plough, down 6 cents to $18.65.