The top after-market NYSE gainers Tuesday were Buckle, Inc, UBS AG, Cambrex Corp, PennyMac Mortgage Investment Trust and Primero Mining Corp. The top after-market NYSE losers were EnerSys, Hertz Global Holdings, Gartner, Verifone Systems and Knight Capital Group, Inc.

Gainers

Buckle, Inc. (BKE) shares climbed 5 percent to $50.00 in post-market trading. The company announced Tuesday that its Board of Directors had authorized a $4.50 per share special cash dividend to be paid to the shareholders of record at the close of business Dec 7, 2012.

UBS AG (UBS) shares surged 4.90 percent to $16.50 in post-market trading. The company stock was upgraded to an “overweight” rating from an “underweight” rating at Barclays Capital Tuesday.

Cambrex Corp. (CBM) shares gained 4.64 percent to $10.59 in post-market trading. The company stock tumbled more than 16 percent in regular trading.

PennyMac Mortgage Investment Trust (PMT) shares advanced 3.59 percent to $25.98 in post-market trading. The stock has a 52-week low of $15.45, a 52-week high of $25.77 and $1.04 billion in market capitalization.

Primero Mining Corp. (PPP) shares rose 3.39 percent to $7.93 in post-market trading. The stock has a 52-week low of $2.28, a 52-week high of $7.81 and $723.18 million in market capitalization.

Losers

EnerSys (ENS) shares tumbled 8.97 percent to $31.66 in post-market trading. The company currently expects the third quarter adjusted net profit to be in a range of $0.77 to $0.81 per share, below analysts’ estimate of a net profit of $0.89 per share. Its second quarter net profit surged to $43.8 million or $0.90 per share from $28.3 million or $0.57 per share in the same quarter last year.

Hertz Global Holdings Inc. (HTZ) share plunged 4.84 percent to $13.16 in post-market trading. The company stock surged more than 5 percent in regular trading.

Gartner Inc. (IT) shares fell 3.21 percent to $45.28 in post-market trading. The stock has a 52-week low of $34.38, a 52-week high of $51.45 and $4.37 billion in market capitalization.

Verifone Systems Inc. (PAY) shares declined 3.13 percent to $31.30 in post-market trading.

Knight Capital Group, Inc. (KCG) shares declined 3.04 percent to $2.55 in post-market trading. The stock has a 52-week low of $2.27, a 52-week high of $13.59 and $477.87 million in market capitalization.

New york city NYSE Euronext