A pedestrian walks past the NASDAQ building in New York City
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 Tuesday were Amyris Inc, Silicon Graphics International Corp, Procera Networks Inc and Tangoe Inc.

Amyris Inc (AMRS) shares climbed 19.69 percent to $3.10 in post-market trading. The stock has a 52-week low of $1.57, a 52-week high of $13.31 and $152.13 million in market capitalization.

Silicon Graphics International Corp (SGI) shares gained 15 percent to $9.20 in post-market trading. The stock has a 52-week low of $5.02, a 52-week high of $16.10 and $258.61 million in market capitalization.

Procera Networks Inc. (PKT) shares advanced 11.88 percent to $22.7 in post-market trading. The stock has a 52-week low of $13.93, a 52-week high of $25.99 and $390.08 million in market capitalization.

Tangoe Inc (TNGO) shares rose 5.59 percent to $13.60 in post-market trading. The stock has a 52-week low of $12, a 52-week high of $23.05 and $480.98 million in market capitalization.

The top after-market NASDAQ losers Tuesday were Plexus Corp, LivePerson Inc, EZCORP Inc, Alexza Pharmaceuticals Inc and Rubicon Technology Inc.

Plexus Corp (PLXS) shares declined 23.10 percent to $21.50 in post-market trading. The stock has a 52-week low of $23.23, a 52-week high of $38.50 and $981.31 million in market capitalization.

LivePerson Inc (LPSN) shares slumped 11.17 percent to $13.04 in post-market trading. The stock has a 52-week low of $10.76, a 52-week high of $19.60 and $816.97 million in market capitalization.

EZCORP Inc (EZPW) shares dropped 7.23 percent to $19.25 in post-market trading. The stock has a 52-week low of $18.45, a 52-week high of $33.38 and $1.06 billion in market capitalization.

Alexza Pharmaceuticals Inc (ALXA) shares fell 5.61 percent to $4.21 in post-market trading. The stock has a 52-week low of $2.55, a 52-week high of $13.90 and $53.68 million in market capitalization.

Rubicon Technology Inc (RBCN) shares declined 5.43 percent to $8.54 in post-market trading. The stock has a 52-week low of $8.20, a 52-week high of $13.59 and $203.47 million in market capitalization.