 Stocks wavered to a mixed close on Wall Street, nudging the S&P 500 and the Nasdaq Composite to more records. The S&P 500 inched up 0.1% Monday. The Nasdaq Composite rose 0.3%. The Dow Jones Industrial Average gave up an early gain and fell 31 points. That's about 0.1%. Specialty glassware maker Corning surged after raising its sales forecast.