As CEO and primary shareholder of Berkshire Hathaway (BRK), Warren Buffett, the world's most famous investor, has developed a well-known reputation of buying big stakes in companies he believes in. When Buffett buys shares of a company for BRK, the markets translate his moves as a vote of confidence for a firm's continued success. Although Berkshire Hathaway's holdings change, the company's most recent SEC filings* reveal where the Oracle of Omaha is most heavily invested. Here are the 15 publicly traded stocks, by value, that are the biggest holdings of Berkshire Hathaway.

Among the earnings stories for Friday, Oct. 30, from AP Financial News:

Stocks tumbled Friday, giving back all of the gains from the prior session, as worries about the recovery escalated after a pair of reports on the consumer and as the dollar rallied. The Dow shed 250 points, or 2.5 percent, but finished flat for the month.

Among the earnings stories for Friday, Oct. 30, from AP Financial News:

Among the earnings stories for Friday, Oct. 30, from AP Financial News:

Stocks tumbled Friday, giving back all of the gains from the prior session, as worries about the recovery escalated after a pair of reports on the consumer.

Stocks opened lower Friday after reports showed consumer sentiment and spending have declined.

The Washington Post Co. increased its net income 69 percent in the third quarter, as the company cut costs to narrow losses at its newspapers and kept reaping profit from its cable TV and education divisions.

Futures indicated a lower open for Wall Street on Friday, the last trading day of October, after the Dow experienced its best day in 3 months Thursday after GDP data showed the world's biggest economy exited recession in the third quarter.

What follows is a roundup of corporate earnings reports for Friday, Oct. 30.

Google, long seen as an enemy by many in the news industry, is making a bold attempt to be seen as a friend with a new service it hopes will make it easier for readers to read newspaper and magazine articles.