The top after-market NYSE gainers Tuesday were Genworth Financial, Meritage Homes Corp, Laboratory Corp of America Holdings, Radian Group and Halcon Resources Corp. The top after-market NYSE losers were Kraton Performance Polymers, Polypore International, Con-way, Medifast Inc and AmerisourceBergen Corp.

Gainers:

Genworth Financial Inc. (GNW) shares climbed 6.55 percent to $5.37 in post market trading. The company swung to the second quarter net profit of $76 million or $0.16 per share compared to a net loss of $136 million or $0.28 per share in the same period a year earlier.
Meritage Homes Corp. (MTH) shares surged 6.22 percent to $37.28 in post market trading. The company stock plunged more than 5.5 percent in regular trading.

Laboratory Corp of America Holdings (LH) shares surged 5.84 percent to $89.00 in post market trading. The stock has a 52-week low of $74.57, a 52-week high of $95.30 and $8.14 billion in market capitalization.

Radian Group Inc. (RDN) shares surged 5.71 percent to $2.96 in post market trading.

Halcon Resources Corp. (HK) shares gained 5.30 percent to $6.95 in post market trading. The stock has a 52-week low of $1.80, a 52-week high of $13.30 and $949.25 million in market capitalization.

Losers:

Kraton Performance Polymers Inc. (KRA) shares tumbled 19.30 percent to $18.90 in post market trading. The companies reported a second quarter net profit of $12.41 million or $0.38 per share, sharply lower from $46.98 million or $1.44 per share in the same quarter a year earlier and also widely missed the analysts’ estimate of $0.79 per share.

Polypore International Inc. (PPO) slumped 12.62 percent to $32.47 in post market trading as its second quarter earnings fell short of expectations. The company reported a second quarter adjusted net profit of $23.9 million or $0.51 per share, down from $29.4 million or $0.63 per share in the same period last year and also fell short of Reuters' estimate of $0.54 per share.

Con-way Inc. (CNW) shares plunged 6.79 percent to $33.20 in the post market trading. The company reported adjusted net profit of $37.1 million or $0.66 per share, up from $28.3 million or $0.50 per share in the same period last year but fell short of analysts’ estimate of $0.68 per share.

Medifast Inc. (MED) shares fell 4.40 percent to $26.86 in post market trading. The company stock surged more than 5 percent in regular trading.

AmerisourceBergen Corp. (ABC) shares declined 3.28 percent to $38.40 in post market trading. The company stock surged more than 3 percent in regular trading after it announced the signing of a three-year agreement to supply approximately $18.5 billion in pharmaceuticals to Express Scripts on an annual basis.

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