Overnight Summary: The S&P 500 closed Tuesday at 3735.48 (lower by -0.38%) from 3749.63 (lower by -3.88%) on Monday. Futures have trading higher overnight. The overnight high of 3774.50 was hit at 4:30 a.m. EDT. The low was hit at 3733.50 at 4:20 p.m. EDT, a range of 41…