The top after-market NASDAQ gainers Monday were: Gordmans Stores, Neutral Tandem, Celldex Therapeutics, Openwave Systems, Focus Media Holding, Xyratex, Cal-Maine Foods, Mid-Con Energy Partners, Hercules Offshore and Steel Dynamics.

Gordmans Stores Inc. (GMAN) stock climbed 11.08 percent to $17.15 in post market trading session. The company reported fourth quarter net profit of $10.2 million or $0.53 per share compared to net income of $8.4 million or $0.44 per share in the same period a year ago. The company also expects first quarter earnings to be in a range of $0.40 to $0.41 per share on revenues of $132 to $133 million compared to analysts’ estimation of $0.40 per share on revenue of $128.94 million.

Neutral Tandem Inc. (IQNT) stock climbed 10.79 percent to $12.32 in post market trading after gaining more than 4 percent in regular session.

Celldex Therapeutics Inc. (CLDX) climbed 7.61 percent to $4.95 in post market trading.

Openwave Systems Inc. (OPWV) surged 6.12 percent to $2.60 in aftermarket session.

Focus Media Holding Ltd. (FMCN) stock surged 4.6 percent to $29.32 in aftermarket trading session. The company reported fourth quarter adjusted net income of $96 million or $0.70 per ADS compared to $58.5 million or $0.41 per ADS in the same period a year ago, while analysts expected a net income of $0.61 per share.

Xyratex Ltd. (XRTX) stock gained 3.55 percent to $16.90 in post market trading.

Cal-Maine Foods Inc. (CALM) stock gained 3.55 percent to $42.90 in post market trading session. The stock has a 52-week low of $27.45, a 52-week high of $42.38 and $988.98 million in market capitalization.

Mid-Con Energy Partners LP (MCEP) stock rose 2.75 percent to $24.65 in aftermarket session.

Hercules Offshore Inc. (HERO) stock advanced 2.08 percent to $5.15 in post market session. The stock has a 52-week low of $2.25, a 52-week high of $6.99 and $696.33 million in market capitalization.

Steel Dynamics Inc. (STLD) stock advanced 1.81 percent to $15.77 in post market trading after gaining more than 3 percent in regular session.