The top after-market NYSE gainers Wednesday were Men's Wearhouse, Christopher & Banks, Bright Horizons Family Solutions, Scorpio Tankers and Foot Locker, Inc. The top after-market NYSE losers were Flotek Industries, Northern Tier Energy, Panasonic Corp, Accretive Health and Corporate Office Properties Trust.

Gainers

Men's Wearhouse, Inc. (NYSE:MW) shares rallied 13.35 percent to $32.95 in post-market trading. Its fourth quarter net loss narrowed to $3.4 million from $3.8 million in the same period last year. The company expects fiscal 2013 net profit to be in a range of $2.70 to $2.80 per share against analysts’ estimate of $2.77 per share.

Christopher & Banks Corp. (NYSE:CBK) shares surged 5.02 percent to $6.90 in post-market trading. Its fourth quarter net loss narrowed to $4.05 million or $0.11 per share from $53.22 million or $1.50 per share in the same period last year and also came in better than Reuters' estimate of a loss of $0.18 per share.

Bright Horizons Family Solutions Inc. (NYSE:BFAM) shares gained 2.78 percent to $30.83 in post-market trading. The company reported fourth quarter net profit of $4.17 million on revenues of $273.43 million, up from $3.96 million on revenues of $248.89 million in the same period last year.

Scorpio Tankers Inc. (NYSE:STNG) shares advanced 2.56 percent to $8.41 in post-market trading. The company stock plunged nearly 4 percent in regular trading.

Foot Locker, Inc. (NYSE:FL) shares rose 2.25 percent to $33.68 in post-market trading. The stock has a 52-week low of $27.86, a 52-week high of $37.65 and $4.96 billion in market capitalization.

Losers

Flotek Industries Inc. (NYSE:FTK) shares plunged 3.61 percent to $13.89 in post-market trading. Its fourth quarter net profit surged to $0.44 per share from $0.02 per share in the same period last year. Revenues rose 2.4 percent to $76.7 million compared to $74.9 million last year but missed analysts' estimate of $77.90 million.

Northern Tier Energy LP (NYSE:NTI) shares slumped 2.81 percent to $30.81 in post-market trading. The company reported fourth quarter net profit of $84.5 million or $0.92 per share, sharply lower compared to $292.7 million or $1.38 per share in the same quarter a year earlier. Adjusted profit was $1.08 per share, below analysts’ estimate of $1.45 per share.

Panasonic Corp. (NYSE:PC) shares declined 2.52 percent to $6.97 in post-market trading. The stock has a 52-week low of $4.61, a 52-week high of $9.35 and $16.53 billion in market capitalization.

Accretive Health Inc. (NYSE:AH) shares fell 2.42 percent to $10.50 in post-market trading. The stock has a 52-week low of $7.75, a 52-week high of $25.28 and $1.05 billion in market capitalization.

Corporate Office Properties Trust (NYSE:OFC) shares declined 2.09 percent to $26.68 in post-market trading. The company announced Wednesday that it has priced its previously announced public offering of 3,900,000 newly issued common shares of beneficial interest for estimated gross proceeds, before deducting underwriting discounts and commissions and estimated offering expenses of approximately $106.3 million.