US and Japan Unite Against Yen Weakness in Rare Joint Intervention

The US and Japan have jointly intervened in the foreign exchange market for the first time since 2011 to support the yen. The intervention, which took place on July 31, saw Japan inject an estimated $53-59 billion into forex markets through yen purchases. The US Treasury Secretary Scott Bessent and Japanese Finance Minister Satsuki Katayama publicly confirmed the intervention on August 2-3.

The yen had been sinking to 40-year lows, approaching 163-164 against the dollar. Japan's efforts to stabilize its currency through unilateral interventions had produced limited results, with the yen continuing to slide due to a widening gap between US and Japanese interest rates.

Both Bessent and Katayama signaled readiness for continued action if needed. The intervention has significant implications for crypto markets, as the yen carry trade has been one of the most crowded trades in global finance. When the yen strengthens, traders scramble to unwind positions, pulling capital out of risk assets globally.