Active traders and day traders have many stocks to choose from this Friday morning.  We are tracking news and moves in shares of NVIDIA Corporation (NASDAQ: NVDA), Penson Worldwide (NASDAQ: PNSN), Vermillion, Inc. (NASDAQ: VRML), and Yahoo! Inc. (NASDAQ: YHOO).

NVIDIA Corporation (NASDAQ: NVDA) is down 6.3% premarket to $19.22, relative to a 52-week range of $8.65-$26.17.

Penson Worldwide (NASDAQ: PNSN) is up nearly 6% premarket to $3.30, relative to a 52-week range of $2.73-$7.95.

Vermillion, Inc. (NASDAQ: VRML) is down 11.5% premarket to $6.50, relative to a 52-week range of $3.33-$20.85.

Yahoo! Inc. (NASDAQ: YHOO) is down 4.7% premarket to $16.36, relative to a 52-week range of $12.94-$18.84.