Recent weakness in the yen may stem less from a fundamental deterioration in Japan's economic foundation and more from the strategic hedging activities of foreign investors, according to a research report from Bank of America. The bank's analysis suggests that currency hedging on Japanese equity positions has become a dominant force in the forex market, overshadowing underlying macroeconomic indicators.
The report highlights that Japan's balance of payments position has actually improved over recent years. This improvement has been supported by stronger export performance and a significant rise in inward investment. However, despite these positive fundamental developments, the yen has continued to depreciate against the U.S. dollar. Traditional capital flow metrics do not appear to fully explain this persistent currency depreciation, leading analysts to look deeper into specific investor behaviors.
One key factor identified is the massive scale of foreign investment in Japanese equities. As of March 2025, foreign investors' holdings of Japanese stocks reached approximately $2.2 trillion, a figure that broadly mirrors the holdings that Japanese investors maintain in overseas equities. Over the past year, Japanese stocks have significantly outperformed global markets. This strong outperformance has likely encouraged foreign investors to increase their currency hedges on these equity positions. These hedging activities create additional selling pressure on the yen, as investors convert yen proceeds into their home currencies to protect against currency fluctuations. The report suggests that these hedging flows could amount to several trillion yen, providing a plausible explanation for the divergence between the yen's performance and the improving balance-of-payments data.
The analysis also challenges the notion that fiscal concerns alone account for the currency's weakness. Indicators suggest improving financial conditions within Japan. The loan-to-deposit gap for domestic banks has narrowed since 2024. Additionally, domestic bank stocks have outperformed their U.S. counterparts when measured in dollar terms. These developments point toward a healthier domestic financial environment, further distancing the yen's weakness from purely domestic fiscal or banking sector issues.
Looking ahead, the report outlines scenarios that could influence the yen's trajectory. The currency could remain under pressure if Japanese equities continue their strong outperformance relative to global markets, sustaining high levels of hedging-related selling. Conversely, if that equity outperformance fades, the associated hedging flows may ease, allowing the currency to stabilize. The report also warns that a correction in Japanese stocks could trigger a temporary strengthening of the yen. This would occur as investors unwind their hedges to limit losses on their equity positions.
Analysts noted that current short positioning on the yen appears stretched. They also indicated that continued interest rate increases by the Bank of Japan could provide additional support for the currency. In the current low-volatility environment, yen-buying hedges may appear attractive to investors. The report suggests that market participants should reassess their hedge ratios on Japanese equity holdings, as the dynamics driving currency flows remain complex and heavily influenced by equity market performance.