Japan’s recent intervention to support the yen has led to a notable increase in carry trade activities by Japanese investors. In the two weeks ending August 15, they purchased over 5 trillion yen of foreign stocks and bonds, a sharp reversal from net selling in the previous period. This surge came as the yen briefly strengthened following joint U.S.-Japan efforts to halt its slide, allowing investors to acquire overseas assets at cheaper exchange rates.

Experts highlight that while the intervention temporarily boosted the yen, it did not alter the fundamental drivers encouraging investors to borrow cheaply in Japan and invest abroad. The yen gained from about 164 to 155 per U.S. dollar but subsequently gave back much of that advance, settling near 159. Market watchers say this underscores pressure on the Bank of Japan to raise rates to close the significant 1.8 percentage point gap in 10-year yields with the U.S., which continues to incentivize carry trade strategies.

Long-term Japanese institutions, including pension funds and asset managers, have kept selling yen, viewing the intervention as a temporary fix rather than a cure for structural issues like Japan’s persistently low interest rates. This dynamic has encouraged sustained borrowing in yen to invest in higher-yielding assets globally, especially U.S. government securities. Some currency traders have also resumed bearish positions on the yen, seeing intervention-driven rallies as opportunities to sell.

Despite these trends, speculative short positions on the yen have declined as authorities’ readiness to intervene is now priced in by markets. Overall, the yen intervention has “turbo-charged” the carry trade by providing temporary yen strength that investors leverage to enhance returns abroad without alleviating the core economic incentives. The ongoing wide interest rate differentials between Japan and other nations continue to weigh on the yen’s longer-term prospects.