Jamie Dimon, the CEO of JPMorgan Chase, has shifted his position on tariffs, emphasizing that "uncertainty is not a good thing." Following the implementation of Trump's recent tariffs, the S&P 500 experienced a more than 7% decline in just one month, although broader markets did recover. Larry Fink, CEO of BlackRock, voiced worries about tariffs potentially undermining the economy, noting, "The collective impact in the short run is that people are pausing, they're pulling back." Dimon, who had previously advised individuals to "get over it" concerning tariffs, now acknowledges the possible negative consequences.