Overall, a ruling against the tariffs would boost the earnings of companies in the S&P 500, before interest and taxes, by 2.4 per cent in 2026 over last year’s levels, Wells Fargo & Co. chief equity strategist Ohsung Kwon previously estimated. That would likely drive investors to push up prices to reflect higher profits if the Supreme Court rules against Trump. James St. Aubin, chief investment officer at Ocean Park Asset Management, said that would be “a catalyst for a little bit of a rally.”