Billionaire Warren Buffett's Favorite Valuation Tool Just Made Dubious History -- and It Couldn't Be Worse News for Wall Street

  • For decades, billionaire Warren Buffett has been Wall Street's most-followed money manager -- and for good reason. In his six-decade stead as the CEO of Berkshire Hathaway (BRK.A 0.98%) (BRK.B 0.98%), the appropriately named "Oracle of Omaha" has overseen a cumulative return in his company's Class A shares (BRK.A) of 5,882,492%, through the closing bell on July 3.