Yen Carry Trade

A strategy of borrowing Japanese yen at low interest rates to invest in higher-yielding global assets.

The yen carry trade is a financial strategy where investors borrow money in Japanese yen—historically characterized by extremely low interest rates—and convert it to invest in higher-yielding assets elsewhere, such as U.S. Treasuries, high-yield corporate bonds, or global equities. This trade works well when the yen is stable or depreciating and global market volatility is low. However, if the Japanese yen suddenly appreciates or the Bank of Japan raises interest rates, investors must rapidly unwind their positions by selling their global assets and buying back yen to repay their debt. This unwinding process can trigger sudden, severe sell-offs in global equity and bond markets. Investors care about this trade because it acts as a major source of global liquidity. When the trade is popular, it pumps capital into global risk assets. When it reverses, the rapid unwinding can cause widespread market corrections, even in assets that seem completely unrelated to the Japanese economy.

An institutional investor borrows 150,000,000 yen at a 0.5% interest rate, converts it to $1,000,000 USD (at an exchange rate of 150 yen per dollar), and buys U.S. Treasuries yielding 5.5%. The investor earns a gross yield of 5.5% on the USD assets while paying 0.5% on the yen debt, pocketing a net interest spread of 5.0% (or $50,000 annually) assuming the exchange rate remains unchanged.