CoinDesk
Bitcoin held near $63,600 on Monday, up roughly 1.8% over 24 hours and little changed over seven days, even as Washington and Tokyo intervened together to support the yen for the first time in years. The Bank of Japan may have spent as much as $36.6 billion buying yen after the currency weakened to 163.73 per dollar; the size of the U.S. contribution has not yet been disclosed. The yen rebounded to 157.57 on Friday and held near 157 in Asian trade Monday.
Why it matters
Crypto traders watch the yen because leveraged carry trades borrow cheaply in Japan, where the policy rate sits at 1%, and recycle the proceeds into higher-yielding global assets, bitcoin included. A sudden appreciation in the funding currency forces those positions to close, and the unwind typically drags down everything from emerging-market equities to BTC. The coordinated US-Japan action signals concern over disorderly currency moves and revives a risk the market had largely dismissed.
Market impact
The intervention has so far been a non-event for crypto. BTC traded near $63,600, up about 1.8% over 24 hours and essentially flat over the past week. The policy backdrop hasn't changed: the Fed funds range sits at 3.50%-3.75% against the BoJ's 1%, a 250-275 basis-point gap that keeps the carry trade profitable. Alvin Kan, chief operating officer at Bitget Wallet, framed the intervention as a check on disorderly trading rather than the start of a lasting yen recovery. Without a narrower rate gap or traders unwinding on their own, repeated intervention only slows the slide. BTC remains a correlated risk asset on every fresh yen spike.
Frequently asked questions
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What is the yen carry trade and why does it matter for Bitcoin?
Traders borrow cheaply in Japan at the BoJ's 1% policy rate and use the proceeds to buy higher-yielding global assets, including bitcoin. A sharp yen appreciation forces those leveraged positions to close, which typically drags BTC lower alongside other risk assets.
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How much did Japan and the US spend on the yen intervention?
Bank of Japan data suggests Tokyo may have spent up to $36.6 billion buying yen after the currency weakened to 163.73 per dollar. The size of the U.S. contribution has not yet been disclosed publicly.
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Why is the US-Japan yen intervention described as 'rare'?
It is the first time in years the two have intervened jointly to support the yen. Coordinated action signals concern over disorderly currency moves rather than one-sided weakness, which is why the move revived carry-trade unwind fears in crypto and broader markets.
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How has Bitcoin reacted to the intervention so far?
BTC traded near $63,600 on Monday, up about 1.8% over 24 hours and essentially flat over the past week. So far this round has not forced a meaningful carry-trade unwind in crypto markets.
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What would actually trigger a yen carry-trade unwind?
Either a narrower rate gap (the BoJ tightening or the Fed cutting) or traders voluntarily reducing yen-funded positions. Without one of those, repeated intervention only slows the slide rather than resetting the trade.
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