U.S. stocks ended modestly lower after a worrying monthly consumer-confidence survey was offset by a Federal Reserve official cautioning against hasty rate hikes. The Dow Jones Industrial Average fell 131.6 points, or 0.26%, to 51,349.92. The S&P 500 slipped 12.85 points, or 0.17%, to 7,670.84, while the tech-heavy Nasdaq shed 22.84 points, or 0.09%, to 26,797.54.