A new Bank of Japan lecture adds a missing step to the argument that Japan’s overseas income will push money back into yen and hit Bitcoin. Japan can earn more abroad without bringing that cash home. That changes how investors should read the selloff warning.
Overseas Profits Do Not Always Return Home
Bank of Japan Gov. Kazuo Ueda delivered the lecture on Nov. 6, 2026. The BOJ published it on Nov. 7. He explained that earnings from overseas affiliates often stay invested abroad. Those retained profits support Japan’s primary income surplus, but reinvesting them abroad is also recorded as fresh direct investment. That can raise income and outward investment without cash returning first. Ueda said outward foreign direct investment has overtaken portfolio investment as Japan’s main capital-outflow vehicle since 2012. He also noted that Japan’s foreign-asset stock and the return advantage of overseas holdings would keep primary income a lasting part of its external accounts.
The Data Shows Flows, Not Intent
The latest weekly evidence does not fit a simple story of Japanese investors dumping foreign assets. On Nov. 6, Japan’s Ministry of Finance reported that designated Japanese institutions were net buyers of foreign long-term debt and foreign equity and investment-fund shares during Oct. 25-31. The next checks are close. The ministry lists October’s monthly securities transactions for Nov. 10 and weekly transactions for Nov. 1-7 for Nov. 12, both at 8:50 a.m. Japan time. As of Nov. 9, those results were still ahead.
Those releases can show whether foreign-security purchases or sales persist. Their scope matters. The ministry’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 gives no currency breakdown. A run of net disposals would be evidence about securities allocation. Proving that the proceeds were converted into yen would require more information.
Carry Trades Move Faster Than Accounting
A yen carry trade is a financing position. Investors borrow a lower-yielding currency to buy higher-yielding assets in other currencies. That is not the same as a Japanese company keeping an overseas subsidiary’s profits abroad. An August 2024 Bank for International Settlements analysis described how deleveraging and higher margin requirements appeared to amplify turbulence. Yen-funded carry positions were particularly exposed. A stronger yen can make unhedged yen debt costlier to repay. Higher margins can force cash raising or exposure cuts. Researchers said crypto losses suggested retail margin calls and forced closures of unrelated positions. That is a possible channel, not proof of forced Bitcoin selling now.
What Would Strengthen the Bitcoin Risk Case
Persistent foreign-security disposals would support an allocation shift. Sharper yen moves alongside funding and margin stress would matter more for a carry unwind. Continued outward investment and retained earnings would weaken the claim that overseas profits must drain into yen. I think the missing step is behavior, not accounting. The income surplus alone cannot tell investors whether Japan will sell foreign assets, hold them, or keep earning abroad.
