NEW YORK--(BUSINESS WIRE)--With U.S. monetary policy turning, fundamentals such as productivity and earnings growth are poised to regain prominence as drivers of investment return - with some key indicators "flashing red," according to BlackRock (NYSE:BLK) Investment Institute's (BII) mid-year 2015 investment outlook. The mid-year outlook, "Nearing Normal," provides an update on BII’s main economic assumptions and top investment ideas for 2015, a year so far characterized by divergence in globa