Japan and US Stage Joint Yen Intervention to Counter 40-Year Low

Japanese Finance Minister Satsuki Katayama is set to announce that Tokyo and Washington carried out joint intervention in currency markets to arrest the yen's slide. The announcement, expected on Monday, will confirm a coordinated effort between the two governments to counter what they view as excessive yen weakness.

The operation is believed to be ongoing, with Japan spending around $59 billion buying yen in recent unilateral interventions, although estimates vary from $53 billion to $59 billion due to unconfirmed data. The yen has weakened to its lowest level since the mid-1980s at roughly ¥162-163 per dollar.

Analysts suggest that dollar strength, rather than a loss of confidence in the yen specifically, is driving the decline. However, they caution that intervention can only slow or punish a currency's decline and cannot offset underlying rate differentials.