7 Stocks you need to know for Thursday

Nvidia (NVDA | Quote | Chart | News | PowerRating) gained more than 10% on word that the company was increasing the size of its share buyback program.

Alcoa (AA | Quote | Chart | News | PowerRating) was the big gainer among the Dow industrials on Wednesday, gaining more than 3%.

CVS Caremark (CVS | Quote | Chart | News | PowerRating) announced that it was acquiring rival drug store Longs Drug Stores Corporation (LDG | Quote | Chart | News | PowerRating) for $2.7 billion.

In further merger and acquisition news, Genentech Inc. (DNA | Quote | Chart | News | PowerRating) rejected a bid of more than $43.7 billion from majority shareholder, Roche Holding AG, but remained open to further negotiations.

Best Buy (BBY | Quote | Chart | News | PowerRating) announced that it would begin selling the iPhone by Apple (AAPL | Quote | Chart | News | PowerRating) in all of its stores in September.