Active traders and day traders have many stocks to choose from this Thursday morning.  We are tracking news and moves in shares of Amylin Pharmaceuticals (NASDAQ: AMLN), Biosante Pharmaceuticals (NASDAQ: BPAX), and JA Solar Holdings Co, Ltd. (NASDAQ: JASO).

Amylin Pharmaceuticals (NASDAQ: AMLN) is down more than 25% premarket on heavy volume to $11.12, relative to a 52-week range of $9.51-$24.21. A diabetes drug the company was working on in partnership failed to meet phase II primary endpoints.

Biosante Pharmaceuticals (NASDAQ: BPAX) is up 17% premarket to $2.34, relative to a 52-week range of $1.29-$2.53. The pharmaceutical company’s pancreatic cancer vaccine has shown promising results in phase II clinical trials.

JA Solar Holdings Co, Ltd. (NASDAQ: JASO) is up 3% to $7.43, relative to a 52-week range of $4.22-$10.24. The company reported it has closed a supply deal with a major German solar company.