Active traders and day traders have many stocks to choose from this Wednesday morning.  We are tracking news and moves in shares of Costco Wholesale Corporation (NASDAQ: COST), California Pizza Kitchen, Inc. (NASDAQ: CPKI), and Vivus, Inc. (NASDAQ: VVUS).

Costco Wholesale Corporation (NASDAQ: COST) is down 2% premarket to $79.75, relative to a 52-week range of $53.41-$83.95. The company just issued positive Q3 earnings.

California Pizza Kitchen, Inc. (NASDAQ: CPKI) is up 10% premarket to $18.36, relative to a 52-week range of $12.95-$20.00. The company agreed to be acquired for $18.50 per share by Golden Gate Capital.

Vivus, Inc. (NASDAQ: VVUS) is up 5.5% premarket to $8.85, relative to a 52-week range of $4.69-$13.04. The company announced promising phase 3 results of their Avanafil trials.