Benzinga’s Top Pre-Market Losers (PSS, NAV, AVAV, RMIX, SLXP)

Collective Brands Inc. (NYSE: PSS) decreased 4.96% to $22.80 in the pre-market session. The 52-week trading range for PSS is $7.11 - $24.31. PSS has gained over 38% in the last six months. Collective Brands closed at $23.99 yesterday.

Navistar International Corporation (NYSE: NAV) tumbled 6.37% to $41.43 in the pre-market session. A123 Systems, Inc. (NASDAQ: AONE) announced that it has signed an agreement with Navistar International Corporation to develop lithium ion battery systems . NAV closed at $44.25 in the last trading session. The 52-week trading range for NAV is $23.67 - $48.94.

AeroVironment, Inc. (NASDAQ: AVAV) declined 8.40% to $21.80 in the pre-market session. The 52-week trading range for AVAV is $18.50 - $35.38. AVAV has declined over 15% in the last six months.

U.S. Concrete, Inc. (NASDAQ: RMIX) plunged 31.11% to $0.400 in the pre-market session. U.S. Concrete reported today reported today a fourth-quarter loss of $16.7 million, or $0.46 per share, as compared to $132.2 million, or $3.63 per share, in the year ago period. Revenue declined 31% to $119.9 million for the quarter. The 52-week trading range for RMIX is $0.55 - $2.75. RMIX has declined over 55% in the last year.

Salix Pharmaceuticals, Ltd. (NASDAQ: SLXP) declined 2.34% to $30.50 in the pre-market session. Salix Pharmaceuticals announced that for first quarter of 2010, it expects total Company product revenue to be approximately $40 million and to generate a loss of approximately $0.50 per share. SLXP closed at $31.23 in the last trading session. In the last six months, SLXP has surged over 140%.