The top after-market Nasdaq gainers Monday were STAAR Surgical Company, Cytori Therapeutics Inc, Central European Media Enterprises Ltd, 3SBio Inc, and Gilead Sciences Inc. The top after-market Nasdaq losers were Tetra Tech Inc, Immunomedics Inc, Novavax Inc, and Qlik Technologies Inc.

Gainers

STAAR Surgical Company (NASDAQ:STAA) shares climbed 19.78 percent to $6.60 in post-market trading. The company announced Monday that first quarter revenue is expected to be approximately $18 million, which would represent approximately 16 percent growth.

Cytori Therapeutics Inc. (NASDAQ:CYTX) shares rose 8.82 percent to $2.59 in post-market trading. The company shares lost over 3.50 percent in regular trading Monday.

Central European Media Enterprises Ltd. (NASDAQ:CETV) shares advanced 3.36 percent to $4.00 in post-market trading.  The company shares lost over 2.50 percent in regular trading Monday.

3SBio Inc. (NASDAQ:SSRX) shares gained 1.97 percent to $15.55 in post-market trading. The company shares have a 52-week trading range of $10.15-$15.28 and a market capitalization of $336.76 million.

Gilead Sciences Inc. (NASDAQ:GILD) shares surged 1.93 percent to $48.11 in post-market trading. The company announced Monday that it has submitted a New Drug Application (NDA) to the U.S. Food and Drug Administration (FDA) for approval of sofosbuvir, a once-daily oral nucleotide analogue for the treatment of chronic hepatitis C virus (HCV) infection.

Losers

Tetra Tech Inc. (NASDAQ:TTEK) shares plunged 3.42 percent to $27.39 in post-market trading. The company shares have a 52-week trading range of $23.73-$31.49 and a market capitalization of $1.83 billion.

Immunomedics Inc. (NASDAQ:IMMU) shares lost 3.25 percent to $2.38 in post-market trading. The company shares lost more than 5 percent in regular trading Monday. The shares have a 52-week trading range of $2.11-$4.00 and a market capitalization of $186.22 million.

Novavax Inc. (NASDAQ:ARCC) shares dropped 2.02 percent to $2.42 in post-market trading. The company shares have a 52-week trading range of $1.12-$2.54 and a market capitalization of $365.42 million. 

Qlik Technologies Inc. (NASDAQ:QLIK) shares declined 1.61 percent to $24.75 in post-market trading. The company shares gained about 5 percent in regular trading Monday.