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The top after-market NASDAQ gainers Wednesday were ImmunoGen Inc, MAP Pharmaceuticals Inc, Star Scientific Inc and STEC Inc.

The top after-market NASDAQ losers Wednesday were China Auto Logistics, BGC Partners and PDC Energy.

Gainers

ImmunoGen Inc (IMGN) shares climbed 7.11 percent to $12.50 in post-market trading. The stock has a 52-week low of $10.68, a 52-week high of $18.10 and $981.68 million in market capitalization.

MAP Pharmaceuticals Inc (MAPP) shares gained 5.30 percent to $13.50 in post-market trading. The company announced that its New Drug Application (NDA) resubmission for Levadex (orally inhaled migraine drug for the adults) had been accepted for filing by the U.S. Food and Drug Administration (FDA). The stock has a 52-week trading range of $11.11-$ 17.92 and $452.38 million in market capitalization.

Star Scientific Inc (STSI) shares advanced 4.26 percent to $2.45 in post-market trading. The stocks gained 15.76 percent in regular trading. The company shares have a 52-week trading range of $1.56 - $5.05 and $343.77 million in market capitalization.

STEC Inc (STEC) shares rose 3.11 percent to $4.64 in post-market trading. The stock has a 52-week low of $3.95, a 52-week high of $10.87 and $210.27 million in market capitalization.

Losers

China Auto Logistics Inc (CALI) shares declined 5.98 percent to $4.40 in post-market trading. The stock lost 4.29 percent in regular trade. The company shares have a 52-week trading range of $1.09-$7.48 and $17.29 million in market capitalization.

BGC Partners Inc (BGCP) shares slumped 4.97 percent to $3.25 in post-market trading. The stock has a 52-week low of $3.11, a 52-week high of $8.03 and $519.65 million in market capitalization.

PDC Energy (PDCE) shares dropped 4.32 percent to $30.11 in post-market trading. The company shares gained 4.42 percent in regular trading. The stock has a 52-week low of $19.33, a 52-week high of $40.26 and $930.50 million in market capitalization.

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