Japan just had a major political shift. After the election, Japan’s long-term interest rates jumped to levels not seen in decades. That may sound like a local story. But it can quickly affect US stocks, US mortgages, and even the value of the dollar.
To understand why, it helps to know what an interest rate is. It is the “price of borrowing money.” When rates rise, borrowing becomes more costly. When rates fall, borrowing is cheaper.
For many years, Japan had extremely low rates. This helped create something called the carry trade. A carry trade is a simple idea: investors borrow money where it is cheap, then invest it where returns are higher. In this case, many investors borrowed in Japanese yen at very low rates. Then they changed that yen into US dollars and bought US assets like stocks and bonds.
This worked well when Japan’s rates were near zero and US rates were higher. But when Japan’s rates rise, the trade becomes less profitable. Investors may decide to exit. To exit, they often need to sell US assets and move money back to Japan. If enough investors do that at once, US markets can drop fast.
There is another risk. Japan also holds a large amount of foreign reserves, including US government debt. Bonds are loans made to governments or companies. When more bonds are sold, bond prices can fall, and yields (the effective interest rate) can rise. Higher US yields can push up borrowing costs for households and businesses. That can reduce company profits and pressure stock prices.
Felix Prehn, who runs Goat Academy, explains that these moves can create a chain reaction. First comes currency and rate changes. Then money flows shift. Then markets reprice. The key is not panic. It is having a clear plan, watching the signals that matter, and focusing on strong assets.
He also highlights a simple idea: when governments increase money supply, cash can lose buying power over time. Inflation means prices rise and money buys less. In that kind of environment, people often prefer assets that are harder to create quickly, and businesses with strong earnings and low debt.
Readers who want more background on Felix Prehn and the mission behind Goat Academy can review this page: Felix Prehn Goat Academy.