The top after-market NASDAQ gainers Tuesday were Rudolph Technologies Inc, Harvard Bioscience Inc, FormFactor Inc, Infinera Corporation and PrivateBancorp Inc.

The top after-market NASDAQ losers Monday were Geospace Technologies Corp, Exar Corporation, NetSpend Holdings Inc and Alexza Pharmaceuticals Inc.

Gainers

Rudolph Technologies Inc (RTEC) shares climbed 7.97 percent to $ 13.00 in post-market trading. The stock has a 52-week trading range of $8.00-$12.08 and $ 389.41 million in market capitalization.

Harvard Bioscience Inc (HBIO) shares gained 5.80 percent to $4.01 in post-market trading. The company shares gained after it announced Tuesday that its wholly-owned subsidiary, Harvard Apparatus Regenerative Technology, Inc., has filed a registration statement with the SEC for an initial public offering. The stock has a 52-week low of $3.45, a 52-week high of $4.75 and $109.24 million in market capitalization.

FormFactor Inc (FORM) shares rose 5.09 percent to $4.75 in post-market trading. The stock has a 52-week trading range of $3.70-$6.92and $240.78 million in market capitalization.

Infinera Corporation (INFN) shares advanced 2.78 percent to $19.34 in post-market trading. The stock has a 52-week low of $4.33, a 52-week high of $8.90 and $651.69 billion in market capitalization.

PrivateBancorp Inc (PVTB) shares went up by 2.68 percent to $ 15.80 in post-market trading. The stock has a 52-week low of $9.02, a 52-week high of $17.42 and $1.19 billion in market capitalization.

Losers

Geospace Technologies Corp (GEOS) shares declined 9.91 percent to $6.40 in post-market trading. The company announced the fourth quarter earnings per share of $0.33, worse than the analysts’ estimate of $0.66.

Exar Corporation (EXAR) shares slumped 7.17 percent to $7.90 in post-market trading. The shares slumped after the company said it had removed Senior Vice President and Chief Financial Officer Kevin Bauer from the posts and Ryan A. Benton will replace him.

NetSpend Holdings Inc (NTSP) shares dropped 6.90 percent to $10.66 in post-market trading. The stock has a 52-week low of $6.41, a 52-week high of $11.97 and $ 798.65 million in market capitalization.

Alexza Pharmaceuticals Inc (ALXA) shares fell 5.14 percent to $4.98 in post-market trading. The stock has a 52-week low of $2.55, a 52-week high of $10.00 and $ 82.36 million in market capitalization.