Here are the 10 most active shares in NASDAQ pre market trading, as of 8:41 a.m., Aug. 19, 2013:

Supernus Pharmaceuticals, Inc. (NASDAQ: SUPN)

SUPN is currently trading at $8.69, up 2.05 percent with 30.87 pct change on 752,156 share volume

QUALCOMM Incorporated (NASDAQ: QCOM)

QCOM is currently trading at $66.93, up 0.03 percent with 0.04 pct change on 486,953 share volume

Facebook, Inc. (NASDAQ: FB)

FB is currently trading at $37.35, up 0.27 percent with 0.73 pct change on 377,591 share volume

BlackBerry Limited (NASDAQ: BBRY)

BBRY is currently trading at $10.30, down 0.21 percent with 2.00 pct change on 245,386 share volume

Symantec Corporation (NASDAQ: SYMC)

SYMC is currently trading at $26.24, unchanged on 170,221 share volume

plc (NASDAQ: SHPG)

SHPG is currently trading at $113.36, up 0.51 percent with 0.45 pct change on 130,814 share volume

PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ)

QQQ is currently trading at $75.37, down 0.115 percent with 0.15 pct change on 125,886 share volume

Apple Inc. (NASDAQ: AAPL)

AAPL is currently trading at $503.88, up 1.55 percent with 0.31 pct change with 97,255 share volume

MannKind Corporation (NASDAQ: MNKD)

MNKD is currently trading at $5.90, up 0.13 percent with 2.25 pct change on 88,606 share volume

Intel Corporation (NASDAQ: INTC)

INTC is currently trading at $22.03, up 0.115 percent with 0.52 pct change on 84,883 share volume