Healthcare stocks drag Wall Street lower

U.S. stocks dipped on Wednesday as a drop in the healthcare sector took the shine off a post-election rally that had powered Wall Street to record levels. Healthcare stocks, which had a sharp run higher following the election, fell 1.4 percent, dragged down by Eli Lilly after the company said it would stop developing its Alzheimer's drug following a trail failure. Biogen dropped 6.2 percent, while Axovant fell 5.2 percent.