Commuters pass by Nasdaq headquarters in New York.
People walk by Nasdaq headquarters in New York. REUTERS

The top after-market Nasdaq gainers Tuesday were Cynosure Inc, NPS Pharmaceuticals Inc, Biosante Pharmaceuticals Inc, Infinera Corporation and Ctrip.com International Ltd. The top after-market Nasdaq losers were Silver Standard Resources Inc, Endo Health Solutions Inc, Flamel Technologies S.A., OraSure Technologies Inc and Corinthian Colleges Inc.

Gainers

Cynosure Inc (CYNO) shares climbed 6.55 percent to $8.70 in post-market trading. The company shares declined 4.34 percent in regular trading Tuesday.

NPS Pharmaceuticals Inc (NPSP) shares surged 5.58 percent to $11.55 in post-market trading. The company shares have a 52-week trading range of $4.35 - $9.28 and a market capitalization of 711.49 million.

Biosante Pharmaceuticals Inc. (BPAX) shares advanced 3.47 percent to $8.09 in post-market trading. The company shares gained 8.02 percent in regular trading Tuesday.

Infinera Corporation (INFN) shares rose 3.03 percent to $6.13 in post-market trading. Telefonica International Wholesale Services (TIWS), part of Telefonica Global Solutions, and Infinera announced Tuesday the international upgrade to TIWS' SAm-1 submarine Cable Network, connecting North and South America with the Infinera DTN-X platform.

Ctrip.com International Ltd. (CTRP) shares gained 2.90 percent to $18.09 in post-market trading. The company announced that it proposed to offer up to $140 million in aggregate principal amount of convertible senior notes due 2017, subject to market conditions.

Losers

Silver Standard Resources Inc (SSRI) shares plunged 4.54 percent to $15.56 in post-market trading. The company shares have a 52-week trading range of $10.06 - $26.92 and a market capitalization of 1.32 billion.

Endo Health Solutions (ENDP) shares plunged 2.52 percent to $32.50 in post-market trading. The company shares have a 52-week trading range of mce_markernbsp;26.02 - $39.29 and a market capitalization of 3.90 billion.

Flamel Technologies S.A. (FLML) shares declined 2.25 percent to $4.35 in post-market trading.

OraSure Technologies (OSUR) shares fell 1.89 percent to $10.41 in post-market trading. The company shares gained more than 2 percent in regular trading Tuesday.

Corinthian Colleges Inc (COCO) shares declined 1.76 percent to $2.79 in post-market trading. The company shares gained more than 5 percent in regular trading.