Fast Selloffs, Fast Rebounds: Trump Volatility Rocks Wall Street

The abrupt threat of US tariffs on Europe triggered one of the most synchronized market selloffs this week since the pandemic — and had traders second-guessing once-reliable hedges.

Stocks tumbled, along with bonds, credit, crypto and emerging markets after President Donald Trump floated fresh levies as part of a Greenland power play. By midweek, Trump reversed course and markets bounced back.

But it wasn’t just the drop that shook traders. It was the déjà vu. This marked the 21st time since 2020 that major asset classes declined in unison on a day that the S&P 500 fell at least ...