The top after-market NASDAQ gainers Monday were: Coinstar, Hansen Medical, NXP Semiconductors, Exide Technologies, ShoreTel and Yum! Brands. The top after-market NASDAQ losers were: Kenexa Corp, PMC - Sierra, ViaSat, Affymetrix and InterDigital.

Gainers: Coinstar, Inc. (CSTR) shares climbed 16.89 percent to $59.10 in post market trading session. The company reported fourth quarter net profit of $1.00 per share compared to of $0.68 per share in the same quarter a year-earlier and against analysts' estimation of $0.64 per share.

Hansen Medical, Inc. (HNSN) shares surged 5.38 percent to $3.92 in aftermarket trading session. The company stock plunged nearly 5 percent in regular trading session.

NXP Semiconductors N.V. (NXPI) shares gained 4.05 percent to $22.62 in post market trading session. The stock has a 52-week low of $13.06, a 52-week high of $35.32 and $5.45 billion in market capitalization.

Exide Technologies (XIDE) shares gained 3.71 percent to $3.91 in aftermarket trading session.

ShoreTel, Inc. (SHOR) shares gained 3.05 percent to $5.74 in post market trading session after gaining more than 3 percent in regular session.

Yum! Brands, Inc. (YUM) shares gained 2.23 percent to $64.60 in post market trading session. The company reported fourth quarter net income of $356 million or $0.75 per share compared to $274 million or $0.56 per share in the same quarter a year-earlier and against analysts' estimation of $0.74 per share.

Losers:

Kenexa Corp. (KNXA) shares slumped 10.98 percent to $24.98 in post market trading session as its first quarter earnings guidance fell short of expectations. The company expects first quarter adjusted net profit to be in a range of $0.15 to $0.17 per share on adjusted revenues of 78 to $79 million, while analysts' expect the company to report net profit of $0.22 per share on revenue s of $76.91 million for the first quarter.

PMC - Sierra, Inc. (PMCS) shares plunged 6.08 percent to $6.33 in aftermarket trading session. The company reported fourth quarter adjusted net profit of $29 million or $0.13 per share compared to $34.6 million or $0.15 per share in the same quarter a year-earlier and against analysts' estimation of $0.13 per share.

ViaSat, Inc. (VSAT) shares plunged 6.04 percent to $46.51 in aftermarket trading session. Its third quarter net profit declined to $5.1 million or $0.12 per share from 12.9 million or $0.30 per share in the same period a year-earlier.

Affymetrix, Inc. (AFFX) shares declined 5.02 percent to $4.92 in aftermarket trading session.

InterDigital, Inc. (IDCC) shares declined 4.57 percent to $38.81 in aftermarket trading session as its first quarter revenue guidance fell short of expectations. The company said that it expects first quarter revenue to be approximately $69 million, while analysts expect quarterly revenue of $76.51 million for the first quarter.