U.S. stocks careened through a manic Monday after President Donald Trump threatened to crank his tariffs higher, despite a stunning display showing how dearly Wall Street wants him to do the opposite. The S&P 500 slipped 0.2% at the end of a day full of heart-racing reversals as battered financial markets try to figure out what Trump’s ultimate goal is for his trade war. If it’s to get other countries to agree to trade deals, he could lower his tariffs and avoid a possible recession. But if it’s to remake the economy and stick with tariffs for the long haul, stock prices may need to fall further. The Dow Jones Industrial Average fell 349 points, or 0.9%, and the Nasdaq composite edged up by 0.1%. All three indexes started the day sharply lower, and the Dow plunged as many as 1,700 points following even worse losses elsewhere in the world. But it suddenly surged to a gain of nearly 900 points in the late morning. The S&P 500, meanwhile, went from a loss of 4.7% to a leap of 3.4%, which would have been its biggest jump in years. The sudden rise followed a false rumor that Trump was considering a 90-day pause on his tariffs, one that a White House account on X quickly labeled as “fake news.” That a rumor could move trillions of dollars’ worth of investments shows how much investors are hoping to see signs that Trump may let up on tariffs. Stocks quickly turned back down, and shortly afterward, Trump dug in further and said he may raise tariffs more against China after the world’s second-largest economy retaliated last week with its own set of tariffs on U.S. products. It’s a slap in the face to Wall Street because it suggests Trump may not care how much pain he inflicts on the market. Many professional investors had long thought that a president who used to crow about records reached under his watch would pull back on policies if they sent the Dow reeling. On Sunday Trump told reporters aboard Air Force One that he wasn’t concerned about a sell-off and that “sometimes you have to take medicine to fix something.” Trump has given several reasons for his stiff tariffs, including to bring manufacturing jobs back to the United States, which is a process that could take years. Trump on Sunday said he wanted to bring down the numbers for how much more the United States imports from other countries versus how much it sends to them. Indexes nevertheless did keep swinging between losses and gains Monday after Trump’s latest tariff threat, in part because hope still remains in markets that negotiations may still come.