Highlights
Risk-off trading was triggered early in the day after the president warned Apple of 25 percent tariffs on iPhones not made in the US. A second post threatened 50 percent tariffs on goods from the European Union starting on June 1 because Trump said trade talks were going nowhere. That sent the S&P 500 down about 1.7 percent.
Disappointing guidance from retailers added to the negative sentiment. Market losses moderated late in the day after CNBC reported Trump's threat against the EU was intended to boost leverage in trade talks rather than a likely outcome.
Information technology, communications services and consumer discretionary shares were among the day's worst performers as megacaps had a bad day. Utilities held up best as long rates declined.