Anonymous BOJ insider fuels yen carry-trade repatriation fears

An individual using the name Yuto Kanzaki, who describes himself as an anonymous Bank of Japan insider, posted messages saying Japan will bring its wealth back home. The posts have raised concern that the BOJ could prompt an unwind of the yen carry trade and reduce liquidity in foreign equity, bond and cryptocurrency markets.

Kanzaki wrote on social media that “Japan’s wealth is returning to its homeland. By any means necessary. The Bank of Japan has so decided.” He also posted an earlier apology, writing that “the measures being prepared by the Bank of Japan will affect the lives of billions of people,” and offered regrets to Western countries for potential effects. There has been no official confirmation from the Bank of Japan or the Japanese government that such a program is underway.

The comment follows public remarks by Finance Minister Satsuki Katayama, who suggested it may be appropriate to encourage domestic investors, and the Government Pension Investment Fund in particular, to repatriate capital. Katayama stated, “now might be a good time to encourage local investors, and the Government Pension Investment Fund (GPIF) in particular, to bring money home.”

The yen carry trade involves borrowing in yen at low interest rates and investing those funds in higher-yielding assets abroad. Market participants say if Japanese investors sell foreign assets or stop new overseas allocations, the pool of capital that has funded foreign markets could shrink.

Economists have begun to model possible effects if large-scale repatriation takes place. Adam Posen, president of the Peterson Institute for International Economics, wrote that many may be underestimating how quickly the Bank of Japan could tighten policy, which would raise the cost of yen funding and could speed an unwind. Other analysts cautioned that a rapid pullback of Japanese capital could compress liquidity in markets that have relied on those flows.

So far the claims are limited to social media posts and comments from officials urging a reassessment of overseas holdings. No BOJ policy papers, formal announcements or coordinated plans have been made public. Market data this week shows increased scrutiny of capital flows but does not indicate a mass, immediate withdrawal.

Japanese institutional investors, including the government pension fund, are large global allocators of capital relative to Japan’s economy. A coordinated repatriation would likely involve selling foreign assets or reducing new foreign allocations, which could affect asset prices and exchange rates.

Authorities have not verified the anonymous posts. Market participants say they will look for formal guidance from the Bank of Japan, updates from the finance ministry and observable moves by major domestic investors to confirm whether repatriation is proceeding.