9 November 2026 — Japan's Ministry of Finance has disclosed the daily breakdown of its foreign-exchange intervention during July–September 2026, confirming a total of ¥15,399.3 billion (¥15.3993 trillion) of US-dollar sales and Japanese-yen purchases across three trading days. The release identifies the dates and amounts; it does not establish what the yen would have done without the operations.

Three interventions, now itemised

The ministry lists ¥7,975.6 billion on 30 July, ¥5,552.3 billion on 31 July and ¥1,871.4 billion on 3 August. Each entry describes the same direction: US dollars sold and yen bought. The 30 July operation alone represented roughly 52% of the disclosed three-session total.

Why the figures matter for foreign-exchange traders

These are historical executed intervention amounts, not a new operation on 9 November. Their size shows the scale of resources authorities deployed to counter yen weakness. The dates can be compared with contemporaneous USD/JPY moves, but exchange rates also respond to Treasury yields, monetary-policy expectations and risk appetite; the release by itself cannot isolate an intervention effect.

Investors should distinguish Japan's Ministry of Finance, which reports the intervention decisions, from the Bank of Japan's separate monetary-policy decisions. The next important evidence would be official remarks about intervention policy, monetary-policy communications and independently timestamped currency-market data.

Primary source

Japan Ministry of Finance, Foreign Exchange Intervention Operations (July–September 2026), published 9 November 2026.