The missing step in the warning that Japan could trigger Bitcoin’s next selloff

Japan’s overseas profits can keep growing without the cash returning home. Bank of Japan Gov. Kazuo Ueda’s newly published International Monetary Fund lecture explains that distinction, complicating the case for treating Japan’s income surplus as an automatic source of yen buying and selling pressure on Bitcoin.

Ueda delivered the lecture on November 6, 2026, and the BOJ published it November 7. He described how substantial earnings from overseas affiliates stay invested abroad, sustaining Japan’s external income while adding to foreign direct investment.

CryptoSlate’s earlier coverage of Japanese foreign-debt selling examined how a shift toward domestic bonds could affect Bitcoin’s financing backdrop. The new lecture explains why overseas income alone cannot establish that shift.

For Bitcoin, the implications depend on what investors actually do with their money. A gradual shift toward Japanese assets could affect financing conditions; a leveraged yen carry unwind could generate much faster selling across markets. Neither can be read directly from an income-surplus headline.

In the lecture, Ueda said outward foreign direct investment has overtaken portfolio investment as Japan’s dominant capital-outflow vehicle since 2012. Direct investment concerns ownership in overseas businesses; portfolio investment concerns securities holdings.

Retained affiliate profits help explain the difference. Earnings generated abroad contribute to Japan’s primary income surplus, while reinvesting those earnings abroad is recorded as fresh direct investment. The same accounting process can therefore enlarge both income and outward investment without requiring that cash first return to Japan.

Two distinct routes to Bitcoin pressure

Conditional analysis: sustained preference for domestic assets could change financing conditions. Securities flows do not establish yen conversion or Bitcoin sales.

Recorded income is distinct from yen buying. Portfolio shifts and leveraged unwinds require different evidence.

The diagrams do not measure current repatriation, currency conversion, carry positions or Bitcoin sales. The leverage loop describes an August 2024 mechanism, not a November 2026 unwind.

Sources and evidence

Sources

1. BOJ: Ueda lecture, November 2026
2. MOF: Securities methodology
3. BIS: August 2024 unwind analysis
4. BIS: September 2024 review

Supporting facts

• Ueda said a substantial portion of overseas affiliates' earnings stays abroad and is reinvested; those earnings increase Japan's primary income surplus while their reinvestment is recorded as fresh direct investment. [1]
• Japan's recorded overseas investment income does not by itself establish remittance to Japan, conversion into yen or sales of foreign securities. [1] [2]
• MOF's securities series covers designated major reporting institutions and excludes direct investment and reserve assets; it does not capture every portfolio transaction or provide quotation-currency breakdowns. [2]
• BIS researchers said deleveraging and margin increases appeared to amplify August 2024 market turbulence, with yen-funded carry strategies particularly exposed. [3]
• A yen carry trade borrows in a low-yielding currency to invest in higher-yielding foreign-currency assets and may be implemented with derivatives, rather than representing Japanese corporate overseas earnings. [3] [1]
• BIS researchers said crypto losses during August 2024 suggested retail margin calls and possible forced closures in otherwise unrelated assets; that was a qualified historical interpretation, not evidence of a current Bitcoin unwind. [3] [4]
• For Bitcoin, gradual shifts in institutional allocation imply a possible funding headwind, whereas a rapid yen appreciation combined with leverage and margin pressure could trigger faster cross-asset selling; neither follows automatically from Japan's income surplus. [1] [2] [3]

Method

Qualitative, source-bound flow diagrams. The retained-profit loop follows Ueda; the selectable routes distinguish conditional portfolio reallocation from the BIS's historical leverage mechanism. Arrows show relationships, not flow amounts or measured speed.

Scope

The diagrams do not measure current repatriation, currency conversion, carry positions or Bitcoin sales. The leverage loop describes an August 2024 mechanism, not a November 2026 unwind.

Infographic by CryptoSlate

Ueda also described more active domestic investment. Yet he said Japan’s foreign-asset stock and the continuing return advantage of overseas investments would keep primary income an enduring part of its external accounts. That combination allows stronger investment at home alongside continued earnings abroad.

The latest available weekly evidence runs against a simple foreign-asset liquidation story. Japan’s Ministry of Finance (MOF) reported on November 6 that the designated Japanese reporting institutions were net buyers of foreign long-term debt and foreign equity and investment-fund shares during October 25–31.

The next checks are close. The ministry’s release schedule lists October’s monthly securities transactions for November 10 and weekly transactions covering November 1–7 for November 12, both at 8:50 a.m. Japan time. The schedule is subject to change; as of November 9, those results are still ahead.

These releases can help show whether reported foreign-security purchases or disposals persist. Their scope matters: MOF’s methodology covers designated major institutions, excludes direct investment and reserve assets, and does not capture every portfolio transaction. It also includes bond redemptions in disposals and provides no quotation-currency breakdown.

A run of net disposals would consequently be evidence about securities allocation. Establishing that the proceeds were converted into yen would require more information.

Leverage creates a faster Bitcoin exposure

A yen carry trade is a financing position. Investors borrow a lower-yielding currency to invest in higher-yielding assets denominated in other currencies, sometimes using derivatives. That differs from a Japanese company retaining an overseas subsidiary’s profits.

In an August 2024 analysis, researchers at the Bank for International Settlements (BIS) described how deleveraging and increased margin requirements appeared to amplify market turbulence, with yen-funded carry positions particularly exposed. A stronger yen can make an unhedged yen borrowing position more costly to repay, while higher margins can force investors to find cash or cut exposure.

The researchers said that episode’s crypto losses suggested retail margin calls and possible forced closures of otherwise unrelated positions. Those historical findings illustrate a possible transmission channel, rather than establishing forced Bitcoin selling now.

The distinction changes what would strengthen the risk case. Persistent foreign-security disposals would support an allocation shift. Sharper yen moves accompanied by funding and margin stress would be more relevant to a leveraged unwind. Continued outward investment and retained earnings would weaken the claim that overseas profits must immediately drain into yen.