SFGate |
Nasdaq plunges 3%; Dow closes down 267 points
USA TODAY Wall Street investors hoping that stocks could extend their three-day rally are way out of luck — stocks plunged and closed sharply lower Thursday. A drop in the biotechnology sector led stocks lower as Biogen Idec, Gilead Sciences and other biotech … Nasdaq marks worst day since November 2011 as biotechs sink Dow in Triple-Digit Drop and Nasdaq Down 2% US stock market hit by Nasdaq, biotech rout |