The revised edition of "The Intelligent Investor" has landed. In the preface, Warren Buffett calls it "by far the best book about investing ever written."

Warren Buffett is unwinding his most profitable trade in history, filling Berkshire Hathaway’s coffers with cash. But it is unclear if the Oracle of Omaha is ready to go elephant-hunting with his recent bounty.

In fact, it's possible that Buffett will eventually buy the entire business outright. Buffett's mystery stock is none other than insurer Chubb (NYSE: CB). We won't ever know the full details behind the disclosure exemption,