President Donald Trump’s tariffs have spooked investors, with fears of an economic downturn driving a stock market sell-off that has wiped out $4 trillion from the S&P 500’s peak last month, when Wall Street was cheering much of Trump's agenda.
A barrage of new Trump policies has increased uncertainty for businesses, consumers and investors, notably back-and-forth tariff moves against major trading partners like Canada, Mexico and China.
"We've seen clearly a big sentiment shift," said Ayako Yoshioka, senior investment strategist at Wealth Enhancement. "A lot of what has worked is not working now."
The stock market selloff deepened on Monday. The benchmark S&P 500 (.SPX), opens new tab fell 2.7%, its biggest daily drop of the year. The Nasdaq Composite (.IXIC), opens new tab slid 4%, its largest one-day decline since September 2022.
The S&P 500 on Monday closed down 8.6% from its February 19 record high, shedding over $4 trillion in market value since then and nearing a 10% decline that would represent a correction for the index. The tech-heavy Nasdaq ended Thursday down more than 10% from its December high.
Trump over the weekend declined to predict whether the U.S. could face a recession as investors worried about the impact of his trade policy.
"The amount of uncertainty that has been created by the tariff wars with regard to Canada, Mexico and Europe, is causing boards and C-suites to reconsider the pathway forward," Peter Orszag, CEO of Lazard, speaking at the CERAWeek conference in Houston.
"People can understand ongoing tensions with China, but the Canada, Mexico, and Europe part is confusing. Unless that gets resolved over the next month or so, this could do real damage to the economic prospects of the US and M&A activity," Orszag said.
Delta Air Lines (DAL.N), opens new tab on Monday slashed its first-quarter profit estimates by half, sending its shares down 14% in aftermarket action. CEO Ed Bastian blamed heightened U.S. economic uncertainty.
© 2025 Thomson/Reuters. All rights reserved.