Benzinga’s Biggest Losers (SIGA, CIEN, FCEL, DVAX, RMIX)

SIGA Technologies, Inc. (NASDAQ: SIGA) has plunged 14.67% to $7.40 on 1.58 million shares after SIGA Technologies announced today that it has entered into an agreements for the sale of 2,725,339 shares of common stock at a price of $7.35 per share. So far this year, SIGA is up over 125%.

Ciena Corporation (NASDAQ: CIEN) fell 9.90% to $11.92 on 15.35 million shares after Ciena reported that it expects revenue to grow up to 5% for fiscal 2010. In the fourth quarter of 2009, Ciena announced revenue of $176.3 million. Analysts are expecting CIEN to report $171.8 million for 1Q2010. So far in the current year, CIEN gained over 77%.

FuelCell Energy, Inc. (NASDAQ: FCEL) is trading lower by 7% to $3.16. So far this year, FCEL is down over 18%. The 52-week range for FCEL is $1.98-$5.47.

Dynavax Technologies Corporation (NASDAQ: DVAX) shares are down 7.65% to $1.59. So far this year, DVAX is up over 89%. The 52-week range for DVAX is $0.22-$3.35.

U.S. Concrete, Inc. (NASDAQ: RMIX) fell 11.77% to $1.05 on 1.04 million shares. So far in the last five trading session, RMIX is up over 48%. The 52-week range for RMIX is $0.64-$4.49.