BOJ Rate Decision Looms as Yen Shorts Hit 9-Year High
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- Bank of Japan is widely expected to raise its benchmark interest rate to 1% from 0.75% on Tuesday, the highest level since 1995.
- Leveraged funds increased speculative short yen positions to over 115,000 contracts in the week ended June 9, the highest since November 2017, according to CFTC data.
- Yen-funded carry trades — borrowing yen to invest in higher-yielding risk assets — have supported bull markets in equities, government bonds, and potentially crypto, and could unwind if the BOJ signals further tightening.
- The current setup closely mirrors the BOJ's July 2024 rate hike, after which bitcoin plunged from roughly $65,000 to $50,000 within a week as yen shorts were rapidly unwound.
- If Governor Kazuo Ueda signals a faster pace of tightening or hints that rates could rise well beyond 1%, the yen could strengthen sharply, with crypto likely among the hardest-hit assets.
Why it matters: Speculative yen short positions have climbed to 115,000+ contracts — their highest since November 2017 — just as the BOJ is expected to hike rates to 1%. A hawkish surprise from Governor Ueda could force a short squeeze and unwind yen-funded carry trades that have propped up risk assets, repeating the July 2024 episode where bitcoin fell from ~$65,000 to $50,000 in a week.
