The top after-market NYSE gainers Friday were Cooper Industries, HFF, Geo Group, Heckmann and Summit Hotel Properties. The top after-market NYSE losers were Burger King Worldwide, GFI Group, MEMC Electronic Materials, Eaton Corp and Precision Drilling Corp.

Gainers

Cooper Industries Plc. (CBE) shares climbed 5.37 percent to $78.50 in post-market trading. Eaton Corp and Cooper Industries announced Friday that Eaton had completed its acquisition of Cooper.

HFF Inc. (HF) shares surged 3.30 percent to $15.32 in post-market trading. The stock has a 52-week low of $9.88, a 52-week high of $16.93 and $549.66 million in market capitalization.

Geo Group Inc. (GEO) shares gained 2.84 percent to $29.00 in post-market trading. The company announced Friday that it had set a record date of Dec 12, 2012 for the potential payment of a special $340-360 million dividend on or before Dec 31, 2012, subject to the approval of its Board of Directors.

Heckmann Corp. (HEK) shares rose 2.56 percent to $4.01 in post-market trading. The company announced that that its merger with Badlands Power Fuels, LLC closed effective Nov 10.

Summit Hotel Properties Inc. (INN) shares gained 2.39 percent to $8.99 in post-market trading. The stock has a 52-week low of $7.40, a 52-week high of $10.16 and $405.28 million in market capitalization.

Losers

Burger King Worldwide Inc. (BKW) shares plunged 2.80 percent to $16.66 in post-market trading. The stock has a 52-week low of $12.91, a 52-week high of $17.20 and $6.0 billion in market capitalization.

GFI Group Inc. (GFIG) shares declined 2.78 percent to $2.71 in post-market trading. The company’s stock surged nearly 3 percent in regular trading.

MEMC Electronic Materials Inc. (WFR) shares fell 2.73 percent to $2.85 in post-market trading. The stock has a 52-week low of $1.44, a 52-week high of $5.95 and $676.67 million in market capitalization.

Eaton Corp. (ETN) shares declined 1.94 percent to $51.15 in post-market trading. Eaton Corp announced Friday that it had completed its acquisition of Cooper Industries Plc. The acquisition was announced May 21 this year and combines Eaton and Cooper into a new, premier global power management company named Eaton Corporation Plc.

Precision Drilling Corp. (PDS) shares declined 1.82 percent to $7.42 in post-market trading. The company stock surged more than 4 percent in regular trading.