The top after-market NYSE gainers Friday were Superior Energy Services, Freescale Semiconductor, McEwen Mining, Swift Transportation and Korn/Ferry International. The top after-market NYSE losers were Owens Corning, Quicksilver Resources, Flowers Foods, Nationstar Mortgage Holdings and Buckeye Technologies.

Gainers

Superior Energy Services Inc. (SPN) shares climbed 7.68 percent to $19.77 in post-market trading. The company stock was reiterated with a “hold” rating with a price target of $22.00 at MLV Capital Friday.

Freescale Semiconductor Ltd. (FSL) shares surged 6.02 percent to $8.10 in post-market trading. The company stock plunged more than 5 percent in regular trading.

McEwen Mining Inc. (MUX) shares surged 4.62 percent to $3.62 in post-market trading. The stock has a 52-week low of $1.96, a 52-week high of $6.17 and $929.03 million in market capitalization.

Swift Transportation Co. (SWFT) shares gained 4.61 percent to $8.62 in post-market trading. The company stock plunged more than 4 percent in regular trading.

Korn/Ferry International (KFY) shares advanced 4.55 percent to $13.80 in post-market trading. The stock has a 52-week low of $12.10, a 52-week high of $18.75 and $640.04 million in market capitalization.

Losers

Owens Corning Inc. (OC) shares tumbled 12.12 percent to $28.28 in post-market trading. The stock has a 52-week low of $24.69, a 52-week high of $38.00 and $3.80 billion in market capitalization.

Quicksilver Resources Inc. (KWK) shares slumped 10.37 percent to $2.68 in post-market trading. The company stock climbed more than 11 percent in regular trading after it was upgraded to a “neutral” rating from an “underperform” rating at Macquarie.

Flowers Foods Inc. (FLO) shares plunged 9.23 percent to $20.26 in post-market trading. The company stock climbed more than 10 percent in regular trading.

Nationstar Mortgage Holdings Inc. (NSM) shares fell 8.74 percent to $25.49 in post-market trading. The stock has a 52-week low of $13.00, a 52-week high of $37.20 and $2.53 billion in market capitalization.

Buckeye Technologies Inc. (BKI) shares declined 6.95 percent to $23.84 in post-market trading.

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