Key TakeawaysThe S&P 500 added 0.6% on Tuesday, July 16, 2024, amid stronger-than-expected retail sales data and greater certainty the Federal Reserve will lower interest rates in September.Shares of health insurers moved higher after UnitedHealth Group posted better-than-expected second-quarter profits.Charles Schwab shares plunged after the financial services firm warned it would be downsizing its bank to maintain profitability. Major U.S. equities traded higher after several companies posted strong earni ...