CryptoSlate
Japanese institutions recorded ¥2.5894 trillion in net sales of long-term foreign debt across the two weeks through September 26. At the October 6 auction, Japan's 10-year government bond yield averaged 3.101%, up from 2.995% at the September 1 sale, even as auction coverage strengthened and the yield tail narrowed.
Why it matters
The auction points to firmer demand for Japanese government bonds at a higher yield. If institutions continue shifting toward domestic debt and away from foreign holdings, reduced demand for overseas bonds could lift borrowing costs and constrain capital available for risk-taking, including in Bitcoin.
But the flow figures cover designated major Japan-resident reporting institutions and classify securities by issuer residence. They do not specify whether the sales involved US Treasuries, where the proceeds went, or whether any funds moved into Bitcoin. Portfolio shifts should also be distinguished from yen carry trades, which use borrowed yen and have separate short-term funding costs.
Market impact
A BIS working paper using data from 2017 to mid-2024 identifies global funding conditions and speculative motives as important drivers of cross-border Bitcoin and Ether flows. BIS researchers also described how deleveraging and higher margin requirements amplified market turbulence in August 2024, but that episode does not establish a current carry-trade unwind.
For Bitcoin, the key signal to watch is whether foreign-debt selling continues alongside independently observed funding stress. Continued selling with tighter funding would fit the proposed pressure channel; renewed buying and calm funding would weaken it.
Frequently asked questions
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How much foreign debt did Japanese institutions sell?
They recorded ¥2.5894 trillion in net long-term foreign-debt sales across the weeks of September 13–19 and September 20–26.
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What changed at Japan's October 6 bond auction?
The average 10-year government bond yield rose to 3.101% from 2.995% at the September 1 sale. Auction coverage increased and the yield tail narrowed.
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Does the reported selling prove Japanese institutions sold US Treasuries?
No. The data classifies foreign securities by issuer residence but does not identify specific sales of US Treasuries.
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How could foreign-debt selling affect Bitcoin?
If selling persists, reduced demand for overseas bonds could raise borrowing costs and tighten capital available for risk-taking. The figures do not show Bitcoin transactions.
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What would strengthen or weaken the Bitcoin funding concern?
Continued foreign-debt selling alongside independently observed funding stress would fit the proposed pressure channel. Renewed buying and calm funding would weaken it.
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