Active traders and day traders have many stocks to choose from this Friday morning.  We are tracking news and moves in shares of Acorda Therapeutics and Vivus Technologies.

Acorda Therapeutics (NASDAQ: ACOR) is down 17.36% to $23, relative to a 52-week range of $24.99-$40.48. A European medical agency recently turned down a multiple sclerosis treatment made by the company.

Vivus Technologies (NASDAQ: VVUS) is down 15% to $8.88, relative to a 52-week range of $4.69-$13.68. The FDA requested more data for their experimental obesity drug.