Get the latest stock market news updates, read breaking business headlines, track your stock portfolio and access up-to-the-minute stock market data at DailyFinance's Investor Center.

Get the latest stock market news updates, read breaking business headlines, track your stock portfolio and access up-to-the-minute stock market data at DailyFinance's Investor Center.

U.S. employers added 171,000 jobs in October and hiring was stronger over the previous two months than first thought. The unemployment rate inched up to 7.9 percent from 7.8 percent in September.

Warren Buffett's Berkshire Hathaway Inc is to buy direct marketing toy and party supplies merchant Oriental Trading Co for $500 million, the Wall Street Journal reported on Friday, citing a person involved in the deal.

Starbucks posted strong quarterly results after Thursday's market close. Revenue climbed 11% for the premium coffee house chain to $3.36 billion, with earnings of 46 cents a share. It's a far cry from a few years ago, when the chain was on the retreat due to the recession.

Investors looking to predict how the stock market will move have produced countless beat-the-market strategies over the centuries. The latest is a theory that suggests tweets and status updates can be used to foresee a company's fluctuations on Wall Street. Crazy ... but could it work?