Top Losers Pre-Market — PLUG, STEM, NPBC, CRZO, HIMX

Plug Power Inc. (PLUG 5.09 percent) shares declined 9.82 percent to $2.48 during pre-market session after PLUG reported a wider-than-projected loss for Q4.

StemCells Inc. (STEM 11.29 percent) shares fell 6.45 percent to $1.16 during pre-market after STEM posted a bigger decline for Q4.

National Penn Bancshares Inc. (NPBC 1.49 percent) shares were down 4.92 percent to $10.24 during pre-market session after NPBC announced the pricing of 11.56 million stock secondary offering by Warburg Pincus affiliates.

Carrizo Oil & Gas Inc. (CRZO 4.33 percent) fell 4.54 percent to $45.21 during pre-market session after CRZO priced a 4.5 million stock offering at $45.50 a share.

Himax Technologies, Inc. (HIMX 9.77 percent) was down 3.48 percent to $7.21 during pre-market session after falling 6.39 percent on Monday.