Key facts
- The Japanese yen has surged approximately 2% against the U.S. dollar this week.
- This marks the yen's strongest performance since a joint U.S. and Japan intervention in late July.
- Market psychology suggests a shift, with investors becoming more reluctant to aggressively short the yen.
- Data shows yen positioning has flipped from bearish to bullish since early August.
- The Bank of Japan is expected to lift its key interest rate by 25 basis points this month.
The Japanese yen is experiencing a notable rebound against the U.S. dollar, moving from a four-decade low to a roughly 2% surge this week. This shift is attributed to a combination of factors, including capital repatriation, the unwinding of yen-based carry trades, and potential U.S. political pressure. Market sentiment appears to be changing, with investors showing increased reluctance to bet against the yen. Data from Citigroup indicates a flip in positioning from bearish to bullish since August. The Bank of Japan is also anticipated to raise its key interest rate by 25 basis points this month, adding further support. The yen's appreciation extends to gains of nearly 2% against the euro and Australian dollar this week. Analysts suggest the risk of a rapid unwind of yen carry trades is increasing, drawing parallels to past market events. The yen's prior weakening trend was exacerbated by fiscal concerns and the perception that the Bank of Japan was behind the curve on monetary policy tightening. Tokyo previously undertook record solo intervention in April-May, and was later joined by Washington in coordinated action in July-August when the yen weakened to 163.99.