Japan is experiencing a historic capital rotation. After decades of a bond-centric, "play not to lose" mentality that favored an aging population, the country is shifting capital into equities and other risk assets. This is driving its stock market to new highs and reflects a fundamental need to finance new growth industries.

For 30 years, Japanese firms retained profits instead of returning capital, accumulating huge cash and asset piles on their balance sheets. Now, the Tokyo Stock Exchange is pushing for buybacks and dividends, creating a powerful catalyst for value realization that is independent of new earnings generation.

The typical positive correlation between Japanese interest rates and the yen can flip to negative. This occurs when a fiscal risk premium is the main driver of both markets. Once fiscal concerns ease, as they have recently, the correlation reverts, explaining why a stronger JGB market has not led to a stronger yen.

Recent steepening in the U.S. yield curve is not just due to domestic factors. Fiscal uncertainty in Japan is pushing Japanese Government Bond (JGB) yields higher, making U.S. Treasuries less attractive on a currency-hedged basis for global investors, thus pushing long-term U.S. yields up.

After decades of stagnation, Japan is experiencing a bullish turn. PIMCO's CEO attributes this to two key factors: the first real inflation in years and a surge in corporate activism. Activist investors are breaking up conglomerates and improving business models, making Japanese equities newly attractive.

The Japanese Yen's persistent weakness is driven by the Bank of Japan's implicit choice to prioritize domestic financial stability, specifically in the government bond market, over the currency's value. This means that despite threats, FX intervention is a secondary tool, and the BOJ will allow the yen to "free float relatively more" to avoid bond market disruption.

Despite rising JGB yields relative to US Treasuries, the Yen is weakening, not strengthening. This is classic emerging-market price action, signaling that investors believe Japan cannot afford higher rates and will be forced to print money. This serves as a warning for other indebted Western nations.

A critical but overlooked risk for the U.S. credit market is rising interest rates in Japan. Japanese banks are major buyers of AAA-rated Collateralized Loan Obligations (CLOs). If domestic yields become more attractive, they may pull back, removing a significant source of demand that underpins the entire leveraged loan ecosystem.

The recent flattening of Japan's yield curve masks underlying structural weakness in the superlong-end bond market. Reduced purchases by the Bank of Japan will keep net supply high, creating a challenging supply-demand dynamic that domestic investors alone may struggle to absorb, even if the Ministry of Finance cuts issuance.