The top after-market NYSE gainers Wednesday were Yanzhou Coal Mining, Aeropostale, SunTrust Banks, CapitalSource and J.C. Penney Co. The top after-market NYSE losers were Headwaters, IntraLinks Holdings, Forestar Group, AECOM Technology and AAR Corp.

Gainers

Yanzhou Coal Mining Co Ltd. (YZC) shares surged 2.71 percent to $15.18 in post-market trading. The stock has a 52-week low of $12.64, a 52-week high of $25.81 and $7.27 billion in market capitalization.

Aeropostale Inc. (ARO) shares gained 2.51 percent to $14.27 in post-market trading after surging nearly 3 percent in regular trading.

SunTrust Banks Inc. (STI) shares rose 2.24 percent to $27.40 in post-market trading. The stock has a 52-week low of $15.79, a 52-week high of $30.79 and $14.44 billion in market capitalization.

CapitalSource Inc. (CSE) shares advanced 2.19 percent to $7.93 in post-market trading. The company stock declined more than 2 percent in regular trading.

J.C. Penney Co Inc. (JCP) shares gained 2.14 percent to $17.62 in post-market trading. The stock has a 52-week low of $15.69, a 52-week high of $43.18 and $3.78 billion in market capitalization.

Losers

Headwaters Inc. (HW) shares plunged 6.38 percent to $6.75 in post-market trading. The company stock climbed nearly 7 percent in regular trading.

IntraLinks Holdings Inc. (IL) shares fell 3.71 percent to $5.77 in post-market trading. The company stock surged more than 6 percent in regular trading.

Forestar Group Inc. (FOR) shares declined 3.28 percent to $14.16 in post-market trading. The stock has a 52-week low of $11.13, a 52-week high of $18.63 and $507.89 million in market capitalization.

AECOM Technology Corp. (ACM) shares fell 2.70 percent to $20.94 in post-market trading. The stock has a 52-week low of $14.50, a 52-week high of $24.28 and $2.43 billion in market capitalization.

AAR Corp. (AIR) stock declined 2.65 percent to $14.30 in post-market trading. The stock has a 52-week low of $10.00, a 52-week high of $23.67 and $586.91 million in market capitalization.