Active traders and day traders have many stocks to choose from this Wednesday morning.  We are tracking news and moves in shares of Adtran, Inc. (NASDAQ: ADTN), Identive Group, Inc. (NASDAQ: INVE), Graham Packaging Company (NYSE: GRM), Riverbed Technology, Inc. (NASDAQ: RVBD), and Silgan Holdings, Inc. (NASDAQ: SLGN).

Adtran, Inc. (NASDAQ: ADTN) is up nearly 6% premarket to $44.02, relative to a 52-week range of $23.40-$44.70.  The company reported better than expected Q1 EPS and revenue.

Identive Group, Inc. (NASDAQ: INVE) is down more than 15% premarket to $4.82, relative to a 52-week range of $1.29-$5.90. Shares were up more than 115% yesterday.

Riverbed Technology, Inc. (NASDAQ: RVBD) is up 14.5% premarket to $35.40, relative to a 52-week range of $12.56-$44.70. The company was upgraded to buy from hold at ThinkEquity and Capstone.

Silgan Holdings, Inc. (NASDAQ: SLGN) is up 11% premarket on heavy volume to $40.90, relative to a 52-week range of $27.03-$39.05. The company is acquiring Graham Packaging Company (NYSE: GRM) which is up 21% premarket on very heavy volume to $20.33, relative to a 52-week range of $10.32-$18.07.