GLOBAL MARKETS-Dollar gains, U.S. stocks fall as Fed shakes 'complacent' markets
August 26, 2016 at 15:08 PM EDT
NEW YORK, Aug 26 (Reuters) - U.S. stocks gave up early gains in choppy trading on Friday, hurt by a surging U.S. dollar as investors grappled with the possible timing of an interest rate hike after comments from several Federal Reserve officials, including Chair Janet Yellen.