The S&P 500 Index is trading higher as it approaches the mid-session on Tuesday. The benchmark is still trading on the strong side of the more than one-month short-term support zone at 7474.57 to 7429.38, which is its best pivot price support. Helping to provide additional support and trend guidance is the 50-day moving average at 7446.50.Standing in the way of a new record is last week’s high at 7579.93. Investors seem a little tentative to buy strength at current lofty price levels, but that may be what i ...