Top After-Market NASDAQ Movers (K-Swiss, EnerNOC, Nektar Therapeutics, Plexus Corp, Columbia Sportswear, AVEO Pharmaceuticals, Hercules Offshore, Liquidity Services, InterMune)

A pedestrian walks past the NASDAQ building in New York City in this April 30, 2010 file photo. REUTERS

The top after-market NASDAQ gainers Wednesday were K-Swiss Inc, EnerNOC Inc, Nektar Therapeutics and Plexus Corp.

K-Swiss Inc (NASDAQ: KSWS) shares climbed 51.72 percent to $4.84 in post-market trading. The stock has a 52-week low of $2.20, a 52-week high of $4.59 and $113.59 million in market capitalization.

EnerNOC Inc (NASDAQ: ENOC) shares gained 4.03 percent to $15.76 in post-market trading. The stock has a 52-week low of $5.41, a 52-week high of $15.89 and $404.32 million in market capitalization.

Nektar Therapeutics (NASDAQ: NKTR) shares advanced 3.74 percent to $9.43 in post-market trading. The stock has a 52-week low of $5.65, a 52-week high of $10.98 and $1.05 billion in market capitalization.

Plexus Corp (NASDAQ: PLXS) shares rose 3.67 percent to $26 in post-market trading. The stock has a 52-week low of $19.63, a 52-week high of $38.50 and $879.81 million in market capitalization.

The top after-market NASDAQ losers Wednesday were Columbia Sportswear Company, AVEO Pharmaceuticals Inc, Hercules Offshore Inc, Liquidity Services Inc and InterMune Inc.

Columbia Sportswear Company (NASDAQ: COLM) shares declined 7.78 percent to $48.10 in post-market trading. The stock has a 52-week low of $44.84, a 52-week high of $58.47 and $1.77 billion in market capitalization.

AVEO Pharmaceuticals Inc (NASDAQ: AVEO) shares slumped 3.20 percent to $7.86 in post-market trading. The stock has a 52-week low of $5.80, a 52-week high of $14.77 and $355.08 million in market capitalization.

Hercules Offshore Inc (NASDAQ: HERO) shares dropped 3.02 percent to $6.38 in post-market trading. The stock has a 52-week low of $2.91, a 52-week high of $6.74 and $1.04 billion in market capitalization.

Liquidity Services Inc (NASDAQ: LQDT) shares fell 2.29 percent to $39.25 in post-market trading. The stock has a 52-week low of $31, a 52-week high of $66.57 and $1.26 billion in market capitalization.

InterMune Inc (NASDAQ: ITMN) shares declined 2.22 percent to $10.15 in post-market trading. The stock has a 52-week low of $7.21, a 52-week high of $17.09 and $685.24 million in market capitalization.