Stocks traded in the red for all of Wednesday's session, bottoming at 656 in the afternoon before a modest rally left the index down 2.62 points at the close, or 0.4%, to 661.28, for a fourth straight day of losses. VNM (-2.7%), the index's biggest company by market capitalization, was by far the largest contributor to the decline and has slid 6.4% since reaching a record high four sessions ago. The market's top energy names - GAS (-1.6%), PVD (-1.5%) and PVS (-1.9%)