The top after-market NASDAQ gainers Friday were: Vocus, EarthLink, Idenix Pharmaceuticals, Leap Wireless International and Silicon Motion Technology Corp. The top after-market NASDAQ losers were: RTI Biologics, 51job, Broadcom Corp, The Andersons and Bio-Reference Laboratories.

Gainers:

Vocus, Inc. (VOCS) stock surged 3.96 percent to $23.60 in post market trading session. The company stock declined more than 2 percent in regular trading session.

EarthLink, Inc. (ELNK) stock advanced 2.95 percent to $7.69 in post market trading session.

Idenix Pharmaceuticals, Inc. (IDIX) stock advanced 2.8 percent to $12.86 in post market trading session. Analysts at Brean Murray re-affirmed sell rating on shares of IDIX.

Leap Wireless International, Inc. (LEAP) stock gained 2.62 percent to $10.95 in aftermarket trading session. The stock has a 52-week low of $5.50, a 52-week high of $17.66 and $844.97 million in market capitalization.

Silicon Motion Technology Corp. (SIMO) stock advanced 2.56 percent to $18.80 in aftermarket trading session.

Losers:

RTI Biologics, Inc. (RTIX) stock slumped 18.06 percent to $3.13 in aftermarket trading session.

51job, Inc. (JOBS) stock declined 2.5 percent to $49.37 in aftermarket trading session. The company stock climbed nearly 12 percent in regular trading session as its fourth-quarter results and first-quarter 2012 forecast topped expectations.

Broadcom Corp. (BRCM) stock declined 1.77 percent to $36.10 in aftermarket trading session. The company announced that the U.S. Securities and Exchange Commission is investigating BRCM’s accounting of litigation reserves as far back as June 2010.

The Andersons, Inc. (ANDE) stock declined 1.64 percent to $44.50 in post market trading session. The company announced a second quarter 2012 cash dividend of $0.15 per share payable April 23, 2012, to shareholders of record on April 2, 2012.

Bio-Reference Laboratories, Inc. (BRLI) stock declined 1.63 percent to $19.96 in aftermarket trading session. The Law Offices of Nicholas Koluncich III, LLC is investigating possible breaches of fiduciary duty by the Board of Directors of Bio-Reference

Laboratories (BRLI) brought to light by troubling allegations in The Street Sweeper.