Summary
Highlights
The US and Japan recently conducted their first joint currency intervention in 15 years, moving to defend the Japanese yen after it hit 40-year lows. While described as a sign of alliance, the speaker argues it was a calculated move to prevent a massive sell-off of US Treasuries.
The yen's rapid decline increased the cost of essential imports for Japanese households and strained pension funds holding foreign assets. Despite prior solo interventions, the currency continued to slide due to the wide interest rate gap between Japan and the US.
Japan is the world's largest holder of US debt. Had Japan been forced to continue defending the yen alone, they would have likely sold off their US Treasury holdings. A massive dumping of this debt would have spiked yields, directly raising mortgage and loan rates while negatively impacting the valuation of growth stocks.
Tech giants like Amazon and Microsoft, which are heavily funding AI data centers through long-term debt, are highly sensitive to rising yields. The intervention acts as a temporary band-aid rather than a structural fix, and further market volatility is expected unless Japan significantly narrows the interest rate gap with the US.