Dollar falls as U.S. and Japan confirm yen intervention

The dollar fell sharply against the yen after Donald Trump and Japan’s finance minister, Satsuki Katayama, confirmed both governments had stepped into markets, pulling the pair back below 160 yen after it had traded above 163 and touched 40-year highs. The move mattered far beyond currency desks: a firmer yen can ease import-cost pressure in Japan, while a weaker dollar can alter U.S. import prices, corporate margins and bond-market expectations.

Before the intervention, the yen had been under heavy pressure as traders positioned for the Bank of Japan’s policy decision and for signs that officials might tolerate a weaker currency. The dollar then dropped below 160 yen after regulators were suspected of acting, and the yen surged as much as 3.3% to around 158 per dollar before easing back toward 160.5. U.S. officials had requested dollar-yen rate quotes, another sign that the market was bracing for action.

The Bank of Japan held rates while Tokyo intervened to support the currency, underscoring how persistent yen weakness had become a policy problem rather than a routine market swing. Japan’s intervention in the yen market is rare, and the last comparable U.S.-Japan coordinated action came nearly three decades earlier, giving the latest move outsized significance for traders who had been betting that authorities would stay on the sidelines.

Trump described U.S. support for the yen as a “signal of friendship,” saying it would benefit both the U.S. and world economy. Scott Bessent, the U.S. Treasury secretary, was ready to repeat the joint intervention and was pressing for a bigger Federal Reserve backstop, while Katayama signaled that Japanese authorities were prepared to act again if needed.

For businesses, the stakes are immediate. A stronger yen can trim the cost of imported food, fuel and industrial inputs in Japan, while shifts in the dollar-yen rate can move earnings for multinational companies with sales across Asia and financing in multiple currencies. In bond markets, the prospect of more intervention can also reset expectations for Japanese and U.S. policy, keeping currency volatility tied to inflation, growth and the next official move.