Meet the $12 billion investor who's beat the market since the financial crisis mostly by ignoring it

Oppenheimer Global Fund, a $12 billion portfolio of large-cap global stocks, has outperformed its MSCI benchmark since 2008.  But in picking what stocks go into the fund, portfolio manager John Delano pays little attention to what's happening to the benchmark.  "We have an acronym — MANTRA — which stands for Mass Affluence, New Technology, Restructuring and Aging," he told Business Insider.   Ignoring your benchmark is one way to consistently beat it. At least, that approach has...