For the better part of six decades, Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B) CEO Warren Buffett has been one of Wall Street's most-revered investors. Overseeing a cumulative return of more than 5,650,000% in Berkshire's Class A shares (BRK.A) since becoming CEO has earned Buffett quite the following, as well as the nickname, "Oracle of Omaha."

Professional and everyday investors frequently await Berkshire Hathaway's quarterly Form 13F filing to gain an idea of which sectors, industries, trends, and stocks Buffett and his top lieutenants, Todd Combs and Ted Weschler, bought into and sold out of in the latest quarter.

But sometimes Berkshire's quarterly operating results, or Form 4 filings with the Securities and Exchange Commission, can tell a more thorough story -- even if it's an unpleasant one.

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Source Fool.com