US STOCKS-Wall St mixed as doubts about earnings offset biotech M&A bid - Reuters

US STOCKS-Wall St mixed as doubts about earnings offset biotech M&A bid Reuters ... * Yahoo, Chipotle, Yum to report after the close. * Mylan shares up almost 10 pct after Teva bid. * Dow off 0.45 pct, S&P down 0.1 pct, Nasdaq up 0.48 pct (Updates to afternoon). By Noel Randewich. April 21 (Reuters) - U.S. stocks were mixed on Tuesday, ... and more »