This isn't what Wall Street was expecting.
Following Trump's election victory in November, the market jumped on prospects of diminished regulation and favorable tax policies. The Nasdaq climbed to a record close on Dec. 16, capping a more than 9% rally over about six weeks after the election.
Since then, electric car maker Tesla has lost close to half its value, despite — or perhaps because of — the central role that CEO Elon Musk is playing in the Trump administration.
The Nasdaq's high point for the year came on Feb. 19, about a month into Trump's second term. But it finished that week lower and has continued its precipitous decline.