US Treasury's Yen Intervention Firepower 'Limited' Despite Recent Unity

JP Morgan's analysis suggests that the US Treasury has limited capacity to support coordinated yen intervention alongside Japan, despite recent displays of unity between Washington and Tokyo. The bank points out that the Treasury's Exchange Stabilization Fund held around $25.5 billion in foreign assets as of June, which is a small sum compared to Japan's estimated $35-60 billion in intervention activity over the past few years.

JPMorgan notes that unconventional measures could potentially increase Treasury firepower to around $187 billion, but this would require converting International Monetary Fund Special Drawing Rights into dollars and swapping foreign-currency assets into dollars. Federal Reserve participation could effectively double this capacity, giving the US a larger war chest than its headline reserves suggest.

However, JP Morgan's strategists caution that unlimited Treasury intervention is unlikely, as Exchange Stabilization Fund resources are finite by design, and any significant expansion of US firepower would likely require an appropriation from Congress. This suggests that while Washington can provide meaningful support to Japan's efforts to stabilize the yen in the near term, the scale and duration of that support have real limits.