As CEO and primary shareholder of Berkshire Hathaway,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 Berkshire Hathaway, the markets translate his moves as a vote of confidence for a firm's continued success.
It is important to remember that Buffett does not personally make all of Berkshire's investment decisions. Two portfolio managers, Todd Combs and Ted Weschler, each handle several billion dollars of investments on their own.
Holdings of less than $1 billion were probably bought by either Coombs or Weschler. Buffett has said he doesn't interfere with their decisions.
Although Berkshire Hathaway's holdings change, the company's most recent SEC filings* reveal where the company is most heavily invested. This list does not include wholly owned subsidiaries of Berkshire.
Here are the 15 publicly traded stocks, by value, that are the biggest holdings of Berkshire Hathaway.
You can also see data for all the stocks in Berkshire's filing, along with real-time market values of those stakes, with our interactive Berkshire Hathaway Portfolio Tracker.
By Paul Toscano & Alex Crippen - Updated May 15, 2014
*All holdings are as of March 31, 2014, as reported in Berkshire Hathaway's 13F SEC filing on May 15, 2014, except as noted. Holding values are calculated as of the close on May 15, 2014.