The top after-market Nasdaq gainers Tuesday were Idenix Pharmaceuticals Inc, Mitel Networks Corporation, Gevo Inc, Sonus Networks Inc and Medical Action Industries Inc. The top after-market Nasdaq losers were: FSI International, Inc, Adobe Systems Incorporated, Farmers Capital Bank Corporation, Hawaiian Holdings Inc and Kulicke and Soffa Industries Inc.

Gainers

Idenix Pharmaceuticals Inc (IDIX) shares climbed 15.80 percent to $10.85 in after-hours trading. The biopharmaceutical company that develops drugs for the treatment of human viral diseases announced positive data from an ongoing phase IIb study of IDX184 in combination with pegylated interferon and ribavirin after the market hours Tuesday.

Shares of Mitel Networks Corporation (MITL) rose 7.84 percent in post-market session to close at $4.40. The company announced Tuesday a better-than-expected fourth quarter profit. It reported a 4 percent increase in fourth quarter revenues to $157.6 million from $152.2 million last year against the analysts' estimate of $154.21 million.

The company declared earnings per share after adjustments at $0.30 per share compared to the consensus estimate of $0.24 per share for the quarter.

Gevo Inc (GEVO) shares surged 7.09 percent to 6.34 in after-hours trading Friday. The renewable chemicals and advanced biofuels company announced that it has signed a collaborative agreement with the intent to site a cellulosic biomass isobutanol facility in Southeast Asia. 

The voice and data communication equipment maker Sonus Networks Inc (SONS) shares advanced 2.64 percent to $2.33 in post-market trading after the company announced it will buy smaller rival Network Equipment Technologies (NET) for $41.3 million to tap into the government segment.

Medical Action Industries Inc (MDCI) shares gained 4.46 percent and reached $ 3.51 in after-hours trading. Company stocks lost 5.35 percent in regular trading Tuesday.

Losers

FSI International Inc (FSII) traded 13.06 percent lower at $3.86 in post-market session Tuesday. The Chip-equipment maker gave a weak fourth quarter forecast as customers delay spending amid a global economic slowdown, sending the company's shares down.

Adobe Systems Incorporated (ADBE) shares plunged 4.35 percent to $31.46 in post-market session. The diversified software company Tuesday reported financial results for its second quarter of fiscal year 2012 ending June 1, 2012. The company cut its full-year revenue outlook as weak demand in Europe could affect sales of the recently launched versions of its popular design software Photoshop and Acrobat.

Farmers Capital Bank Corporation (FFKT) stocks dropped 3.69 percent to $6.31 in after-hours trading. The company shares surged 3.95 percent in regular hours trading.

Hawaiian Holdings Inc. (HA) shares declined 3.54 percent to $5.99 in after-hours trading after gaining 10.61 percent in regular trading session. The company has a 52-week low of 3.67, a 52-week high of 6.98.

Kulicke and Soffa Industries Inc. (KLIC) shares lost 3.28 percent in after-hours trading to reach $9.29. The company's shares gained 5.49 percent in regular trading.