Warren Buffett buyback

5 Winners and Losers of the Week in Business

Companies can make brilliant moves, but there are also times when things don't work out quite as planned. Here's a rundown of this week's biggest winners and blunders in the business world, from Google to Starbucks.

What Was Wall Street Thinking Last Week?

Last week's most puzzling moves included Bank of America turning ingrate on its debit card users -- who also pay taxes, and hence bailed BoA out -- Oracle's Larry Ellison and HP writing a new chapter in their feud, Warren Buffett opting for a stock buyback, and Sony refusing to pay for 3-D glasses.