The Bank of Japan will announce its interest rate decision on Tuesday, with markets widely expecting its benchmark rate to rise from 0.75% to 1%. For the crypto market, what truly matters is not just the rate hike itself, but the fact that short positions in the yen have accumulated to high levels; if the policy stance turns hawkish, risk assets may face simultaneous downward pressure.
Japanese yen short positions rise to multi-year highs
According to data tracked by the U.S. Commodity Futures Trading Commission, as of the week ending June 9, leveraged funds held more than 115,000 speculative short contracts on the Japanese yen, the highest level since November 2017. These positions bet on further depreciation of the yen.
If the Bank of Japan raises interest rates as expected and signals further tightening, some short positions may be forced to cover, driving a rapid appreciation of the yen. For the market, this means a concentrated unwinding of carry trades—borrowing in low-interest-rate yen to invest in higher-yielding, higher-risk assets—could occur.
Carry trade or risk-on asset exposure
For years, yen-funded carry trades have been regarded as one of the key sources of global liquidity, with受益 assets including not only U.S. equities but also certain bonds and crypto assets. If this trade chain reverses, market volatility often amplifies in tandem.
The article notes that Bitcoin has historically been sensitive to changes in liquidity. If the Japanese yen suddenly strengthens, capital may exit high-risk assets more rapidly, potentially increasing selling pressure on Bitcoin.
Similar fluctuations occurred in 2024.
The current market structure resembles that before the Bank of Japan’s interest rate hike in July 2024. At that time, short positions on the yen were also at elevated levels. Following the July 31 decision, short sellers rapidly covered their positions, triggering a sharp rebound in the yen and causing synchronized volatility across Wall Street, Japanese equities, and the crypto markets.
During that volatility, Bitcoin dropped from around $65,000 to near $50,000 within a week. Therefore, beyond the interest rate decision, the market is more focused on Bank of Japan Governor Kazuo Ueda’s comments regarding the future path of interest rates. If his wording remains cautious, market reactions may be limited; if he signals a faster tightening, volatility pressure could rise significantly.