On the last Friday in April, Warren Buffett got a call from Brian Moynihan, the CEO of Bank of America, asking if he would back Occidental Petroleum’s underdog bid for rival oil driller Anadarko. Two days later, Occidental CEO Vicki Hollub was making the pitch herself, having flown to Omaha to appeal directly to the world’s most famous invest or. It took Buffett only an hour to say yes.
