The U.S. government is becoming increasingly dependent on private investors to finance its growing debt burden.
Privately held U.S. Treasury debt maturing within 1 year has now reached a record $8.3 trillion.
That number has doubled over the last 5 years.
This shows how much the government is relying on short-term financing instead of locking in longer-term debt.
The problem is simple.
When more debt matures quickly, more debt must be refinanced again and again.
That makes borrowing costs more sensitive to interest rates, investor demand, and market liquidity.
At the same time, foreign central banks are holding a smaller share of U.S. Treasuries.
This means private investors are being asked to absorb a larger portion of new debt issuance.
The Treasury market is now depending more on investor appetite than the stable long-term buyers that used to support it.
With U.S. public debt at an all-time high, even a small disruption in funding markets could create a much bigger impact on borrowing costs.
This is why Treasury rollover risk is becoming one of the biggest issues to watch.