The top after-market NYSE gainers Thursday were Gramercy Capital, SunCoke Energy, Calix, Swift Transportation and MGIC Investment. The top after-market NYSE losers were Chipotle Mexican Grill, Freescale Semiconductor, Pep Boys-Manny, Advanced Micro Devices and WESCO International.

Gainers

Gramercy Capital Corp. (GKK) shares climbed 13.82 percent to $2.80 in post-market trading.

SunCoke Energy, Inc. (SXC) shares climbed 8.52 percent to $16.30 in post-market trading. The company announced Thursday that its Board of Directors has approved the formation of a Master Limited Partnership (MLP) and the filing of a registration statement to effect the initial public offering (IPO) of the MLP.

Calix, Inc. (CALX) shares surged 3.85 percent to $5.66 in post-market trading after climbing nearly 15 percent in regular trading.

Swift Transportation Co. (SWFT) shares gained 3.64 percent to $8.25 in post-market trading. The company reported second quarter net profit of $33.7 million or $0.24 per share, up from $19.6 million or $0.14 per share. Revenue rose 3 percent to $872.6 million. Analysts polled by Reuters expected net profit of $0.23 per share on revenues of $882.8 million.

MGIC Investment Corp. (MTG) shares gained 2.52 percent to $2.44 in post-market trading. The company stock slumped nearly 8 percent in regular trading.

Losers

Chipotle Mexican Grill, Inc. (CMG) shares slumped 12.34 percent to $354.01 in post-market trading as its second quarter revenue fell short of expectations. The company reported the second quarter net profit of $81.7 million or $2.56 per share, up from $50.7 million or $1.59 per share in the same period a year-ago. Revenue rose 20.9 percent to $690.93 but fell short of analysts' estimate of $707.09 million.

Freescale Semiconductor, Ltd. (FSL) shares slumped 11.75 percent to $9.01 in post-market trading as its third quarter revenue guidance fell short of expectations. The company expects third quarter revenues to be in the range of $955 million to $1.01 billion compared to analysts' estimate of $1.05 billion. Its second quarter net loss narrowed to $34 million or $0.14 per share from $168 million or $0.79 per share in the same period a year ago.

Pep Boys-Manny, Moe & Jack (PBY) shares plunged 3.39 percent to $9.40 in post-market trading.

Advanced Micro Devices, Inc. (AMD) shares plunged 3.29 percent to $4.70 in post-market trading. Its second quarter net profit declined to $37 million or $0.05 per share from $61 million or $0.08 per share last in the same quarter last year. Adjusted net income was $0.06 per share compared to analysts' estimate of $0.07 per share.

WESCO International, Inc. (WCC) shares declined 2.98 percent to $54.40 in post-market trading. The company reported second quarter net income of $58.9 million or $1.15 per share, up from $50.2 million or $1.00 per share in the same quarter a year-ago while analysts' expected net profit of $1.21 per share.