US stocks: Earnings cloud drags down Dow; Nasdaq gains on biotech M&A
U.S. stocks were a mixed bag on Tuesday, with the Dow ending lower after a handful of uninspiring earnings reports while the Nasdaq closed near a record high following a proposed biotech merger.Travelers, DuPont and IBM shares weighed on the Dow Jones industrial average. DuPont reported lower sales in all of its businesses and said a strong dollar would take […]