The recent joint intervention by the U.S. and Japan to support the yen is notable as it is the first such operation since 1998. The yen had recently fallen to its weakest level against the dollar in nearly four decades, prompting concerns about the potential need for Japan to sell large quantities of U.S. Treasuries to finance unilateral interventions.
Analysts suggest that U.S. participation was driven by a desire to prevent destabilization in U.S. Treasury markets, as Japan is the largest foreign holder of U.S. government debt. Louise Loo from Oxford Economics highlighted that the intervention aims to avoid forced selling of Treasuries, which could impact the dollar.
The use of the Federal Reserve's FIMA repo facility for future interventions indicates a strategy to maintain dollar liquidity without selling Treasuries. The coordinated action also reflects a shift in U.S.-Japan relations under current leadership, with implications for global economic stability and trade dynamics.
However, some analysts caution that without addressing the structural issues driving yen weakness, the effectiveness of this intervention may be limited. Concerns were raised about the mechanics of the intervention, particularly the U.S. selling euros instead of dollars to buy yen, which could confuse markets and undermine the intervention's impact.
Overall, while the intervention may provide short-term relief, long-term solutions will require changes in Japan's monetary policy and bond market dynamics