Dynavax Technologies Corp.: Approximately 27,594,200 shares changed hands, a 1,322.7 percent increase over its 65- day average volume. The shares fell $1.07 or 43.3 percent to $1.40. Edgewater Technology Inc.: Approximately 279,400 shares changed hands, a 1,695.7 percent increase over its 65- day average volume.
Cisco Systems Inc. fell. 5 percent to $24.36 with 59,945,900 shares traded. Comcast Corp. fell. 9 percent to $40.79 with 16,823,200 shares traded. Dynavax Technologies Corp. fell 37.2 percent to $1.55 with 14,965,000 shares traded.
NEW YORK-- Dynavax Technologies Corp. said Monday that the Food and Drug Administration wants it to run a new safety study on its hepatitis B vaccine Heplisav, and the company's shares fell almost 30 percent in morning trading. Dynavax said the FDA wants it to get safety data from more patients.