US Treasury tells banks it may intervene in Japan's yen, source says; US backing of yen actions marks new normal in coordination
Bank of JapanU.S. TreasuryFederal Reserve Bank of New York

US Treasury tells banks it may intervene in Japan's yen, source says; US backing of yen actions marks new normal in coordination

The U.S. Treasury has alerted banks of a potential intervention in the Japanese yen market, following recent actions by Japan to stabilize the currency. This marks a significant shift in U.S.-Japan cooperation to address yen fluctuations, with the yen recently rising from four-decade lows against the dollar.

Forex Factory+1 source31 July 2026 · 23:14 UTC
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The U.S. Treasury's recent communication to banks indicates a readiness to intervene in the Japanese yen market, a move that follows Japan's own efforts to stabilize the currency.13

On Thursday, Japan intervened with approximately $53 billion to support the yen, which had been trading at four-decade lows against the dollar.4

The U.S. Treasury's notice, relayed through the Federal Reserve Bank of New York, urged banks to "stand ready for future action," signaling a coordinated approach to address yen volatility.2

This collaboration between the U.S. and Japan is unprecedented in recent decades, as both nations work together to counteract fluctuations in the global foreign exchange market.

Following the announcement, the yen experienced a notable increase, trading at 159.61 to the dollar, reflecting a swift gain of up to 3.3% in New York trading.6

BoJ data revealed an expected shortfall of 8.2 trillion yen in money market conditions, highlighting the urgency of intervention measures.8

The recent actions underscore a significant shift in U.S.-Japan relations regarding currency stabilization, marking a new normal in their economic cooperation.

Key Insight
“Japan stepped in on Thursday with around $53 billion in surprise yen purchases, pulling the currency off four-decade lows. The US notice, channeled through the NY Fed, told banks to stand ready for future action, with BoJ data showing an 8.2 trillion yen shortfall.”
CuriousCats studied:
1
Forex Factory
“The U.S. Treasury has informed a number of banks that it may intervene in the Japanese yen market on Friday and that they should "stand ready for future action," a source familiar with the matter told ​Reuters.”
Forex Factory →
2
Bloomberg.comBloomberg.com
“Cooperation between the US and Japan to buttress a flailing yen appears to be tightening to a degree unseen in decades, with the two sides jointly pushing back against moves in the global foreign exchange market.”
Bloomberg.com →
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