Key Takeaways
- • Cross-border yen-denominated borrowing surged 67% to approximately JPY360 trillion ($2.3 trillion) between December 2021 and March 2026, representing the largest carry-trade cycle in three decades according to Jefferies quantitative analyst Shrikant Kale.
- • Hedge funds and leveraged investors face acute risk exposure as Japan transitions away from ultra-loose monetary policy; yen appreciation or sharp rate increases could trigger forced asset sales and global market deleveraging similar to the 2024 episode.
- • The 2024 carry-trade unwinding demonstrated systemic vulnerability across asset classes, including sharp declines in Japanese equities, technology stocks, cryptocurrencies, and emerging-market currencies during a single deleveraging episode.
- • Yen carry trade activity remains partially opaque to regulators due to extensive use of derivatives and off-balance-sheet structures, complicating risk measurement and systemic stability assessments.
- • The strategy's mechanics—borrowing yen at low rates and deploying proceeds into higher-yielding global assets—creates leverage-dependent returns that become unprofitable or margin-call triggering when yen strengthens or BOJ policy shifts hawkishly.
Summary
Yen carry trade risks are mounting as Japan moves decisively away from decades of ultra-loose monetary policy, creating renewed concerns that a sudden reversal could trigger widespread deleveraging across global financial markets. According to the Financial Times, hedge funds and other leveraged investors have significantly expanded their reliance on yen-funded positions, though the full scale of activity remains difficult to quantify because much of the trading occurs through derivatives and structures not fully visible to regulators.
Cross-border yen borrowing has expanded dramatically in recent years. Shrikant Kale, a quantitative analyst at Jefferies, estimates that outstanding cross-border yen borrowing increased 67% to approximately JPY360 trillion ($2.3 trillion) between December 2021 and March 2026. Kale characterizes this build-up as the largest carry-trade cycle of the past three decades, indicating historically elevated leverage in the strategy.
The carry trade strategy is straightforward: investors borrow yen at historically low interest rates and invest the proceeds in higher-yielding assets globally, including equities, bonds, emerging-market currencies, and other risk assets. The strategy has proven profitable during extended periods of yen weakness and low Japanese interest rates. However, the vulnerability emerges when either of two conditions materialize—yen appreciation or sharp rises in Japanese interest rates. Both scenarios reduce the return profile of the strategy and can force investors to unwind positions by selling purchased assets and repurchasing yen to repay borrowings.
The consequences of such unwinding became evident in 2024, when a strengthening yen and shifting expectations regarding Bank of Japan policy sparked rapid deleveraging across global markets. Japanese equities experienced a sharp one-day decline during that period, while technology stocks, cryptocurrencies, and emerging-market currencies also came under simultaneous pressure. That episode demonstrated the interconnected nature of yen carry-trade exposures and the systemic risks they pose across multiple asset classes and geographies.
The current environment presents heightened risk given the size of accumulated positions and Japan's policy trajectory away from accommodative monetary settings. With leverage ratios at three-decade highs and regulatory visibility limited by derivative-based structures, the potential for a forced unwinding scenario remains a material concern for institutional investors with exposure to global equities, emerging markets, and other risk assets historically financed by yen carry positions.
Cross-border yen borrowing has expanded dramatically in recent years. Shrikant Kale, a quantitative analyst at Jefferies, estimates that outstanding cross-border yen borrowing increased 67% to approximately JPY360 trillion ($2.3 trillion) between December 2021 and March 2026. Kale characterizes this build-up as the largest carry-trade cycle of the past three decades, indicating historically elevated leverage in the strategy.
The carry trade strategy is straightforward: investors borrow yen at historically low interest rates and invest the proceeds in higher-yielding assets globally, including equities, bonds, emerging-market currencies, and other risk assets. The strategy has proven profitable during extended periods of yen weakness and low Japanese interest rates. However, the vulnerability emerges when either of two conditions materialize—yen appreciation or sharp rises in Japanese interest rates. Both scenarios reduce the return profile of the strategy and can force investors to unwind positions by selling purchased assets and repurchasing yen to repay borrowings.
The consequences of such unwinding became evident in 2024, when a strengthening yen and shifting expectations regarding Bank of Japan policy sparked rapid deleveraging across global markets. Japanese equities experienced a sharp one-day decline during that period, while technology stocks, cryptocurrencies, and emerging-market currencies also came under simultaneous pressure. That episode demonstrated the interconnected nature of yen carry-trade exposures and the systemic risks they pose across multiple asset classes and geographies.
The current environment presents heightened risk given the size of accumulated positions and Japan's policy trajectory away from accommodative monetary settings. With leverage ratios at three-decade highs and regulatory visibility limited by derivative-based structures, the potential for a forced unwinding scenario remains a material concern for institutional investors with exposure to global equities, emerging markets, and other risk assets historically financed by yen carry positions.
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