US markets (close): DJIA 18337.60 (+109.30/+0.60%), S&P 500 2171.20 (+11.27/+0.52%), NASDAQ 5318.55 (+12.84/+0.24%), NYSE 10742.08 (+76.74/+0.72%)
US stocks end higher on reports of an OPEC output cut; Dow gains 111 - USA Today