Asia Stock Trader’s Guide to Looming Supreme Court Tariff Ruling

Asian stock markets, having weathered turbulence from Donald Trump’s sweeping tariffs last year, face another inflection point as the US Supreme Court prepares to rule possibly as early as Friday on their validity.

The MSCI Asia Pacific Index is enjoying a strong start, up around 3% so far in 2026. Asian currencies, meanwhile, have started the year on the back foot, with the Bloomberg Asia Dollar Index down 0.1% so far.

If America’s top court findsTrump’s duties unlawful, large swathes of the levies could be overturned, leaving the government liable for tens of billions of dollars in refunds ...