Markets doubt sustained policy support after Tokyo and Washington fail to reinforce initial currency intervention efforts.
The Japanese Yen (JPY) has weakened against major currencies this week, posting its largest losses versus the US Dollar amid no further joint intervention by US and Japanese authorities. The absence of follow-up action contrasts with last week’s coordinated effort to stabilize the yen, which had faced excessive volatility and disorderly movements in recent months, according to Japan’s Ministry of Finance (MoF).
Last week’s intervention marked the first joint US-Japan effort since 1998, with officials citing the need to counter sharp yen depreciation. Analysts had expected sustained policy coordination to reinforce the yen’s rebound, but markets have since questioned the durability of the support. Commerzbank’s Thu Lan Nguyen noted that confidence in ongoing intervention is critical for the yen’s stability, though US Treasury Secretary Scott Bessent signaled openness to future action if needed.
Japanese Finance Minister Satsuki Katayama reiterated on Monday that Japan remains prepared to act, but traders appear unconvinced without clearer signals of continued US participation. The yen’s underperformance highlights skepticism over the long-term effectiveness of intervention without broader policy alignment.