Summary of Key Points
The U.S. Treasury Department has announced an increase in the scale of long-term Treasury bond repurchases starting in September (at least $4 billion per purchase, to continue until November) in order to lower long-term bond yields (to reduce debt costs and support the economy). This move has been labeled by the market as a "quantitative easing operation with a twist." However, due to various factors such as the ongoing expansion of the U.S. money supply, high fiscal deficits, AI-driven capital competition, and geopolitical instability, the actual effectiveness of this action is widely questioned. It is more likely to serve as a signal rather than a solution to the underlying problems. In the long run, unless the fundamental issues of monetary and fiscal policy are addressed, the upward pressure on yields will be difficult to reverse.
Detailed Analysis
1. What is a "quantitative easing operation with a twist," and why might it not work this time?
Simply put, a "quantitative easing operation with a twist" involves the Treasury Department buying and selling assets: it buys long-term bonds (e.g., 10-30 years) to drive up their prices and lower their yields (since bond prices and yields are inversely related), while simultaneously issuing more short-term bonds to keep short-term interest rates stable or higher. The goal is to reduce long-term interest rates, which are linked to mortgage and corporate loan rates, in order to stimulate the economy.
However, this approach has two major drawbacks:
- Insufficient scale: The U.S. government holds trillions of dollars in bonds, with tens of trillions in 10-30-year bonds. Repurchases of just $4 billion per time (an additional $14 billion this quarter) are like dropping a few drops of ink into the ocean, providing only temporary relief and unable to change the fundamental supply and demand dynamics.
- Lack of historical precedent: Previous successful instances of such operations (e.g., in 2011) relied on coordination with monetary policy—specifically, the Federal Reserve slowing down the pace of money printing. Currently, the U.S. money supply is still growing rapidly (M4 has increased by 6.8% year-on-year, with quarterly annualized growth exceeding 8%). Excessive money printing can lead to inflation, which will in turn drive up long-term yields, rendering the operation ineffective.
2. Excessive money printing and inflation prevent yields from falling
There is a simple logic at play: when too much money is created, inflation will rise after 1-2 years, and bond yields must increase accordingly (otherwise, why would anyone buy bonds if inflation erodes the value of money)?
The current situation in the U.S. is as follows:
- The money supply is still increasing rapidly: M4 grew by 6.8% year-on-year in June 2026, faster than in previous years.
- Inflation has not met the target: July's CPI was 3.4%, and core CPI was 2.5%, both above the Federal Reserve's 2% target.
- Energy prices remain high due to geopolitical conflicts (e.g., the Iran situation).
Therefore, the market understands that as long as the money supply continues to expand, inflation expectations will not decline, and long-term yields will inevitably rise. The Treasury Department's attempt to lower yields goes against the natural cycle of "money printing → inflation → rising yields," making it challenging to succeed.
3. Severe supply and demand imbalance: The government borrows too much, and AI is competing for funds
Bond yields are determined by supply and demand: if supply exceeds demand, prices fall and yields rise; if demand exceeds supply, prices rise and yields fall. The current situation in the U.S. bond market is a double challenge:
- Supply side: The government is borrowing excessively, with federal debt exceeding $40 trillion, and it needs to issue new bonds to repay existing debt and pay interest. Interest payments already account for a significant portion of personal income taxes (for example, if you earn $100 in taxes, a portion must be used to pay bond interest), and this amount is increasing. The more bonds issued, the greater the supply, and thus higher the yields.
- Demand side: AI companies are competing for funds. Tech companies investing in AI data centers require large amounts of capital and often borrow from the bond market. In the first half of 2026, there was a significant increase in bond issuance by AI-related companies, competing with government bonds for long-term funds. With more funds drawn by AI companies, the demand for bonds decreases, leading to higher yields.
Foreign investors (e.g., Japan, the largest holder of U.S. bonds) are also reducing their purchases. Rising bond yields in Japan are causing capital to flow back to Japan, further reducing demand for U.S. bonds. Both supply and demand factors are unfavorable, making it difficult to lower yields.
4. Geopolitics and market confidence: More intervention only adds to market anxiety
Geopolitical conflicts (e.g., the Iran situation) not only drive up energy prices but also undermine market confidence:
- The market perceives that government policies are inconsistent and unpredictable (e.g., previous interventions in foreign exchange and now in bond markets), increasing uncertainty.
- "Bond vigilantes" (investors who closely monitor government fiscal policies) are becoming more active, demanding higher yields as a risk premium due to concerns about the government's ability to repay its debt.
For example, after the Treasury Department announced the repurchase program, short-term yields did drop slightly but quickly rebounded because the market believed that government intervention indicated that long-term yields were truly out of control, leading to further increases in yields.
5. Debt sustainability: The more interest is paid, the deeper the cycle
The U.S. debt problem has reached a point where interest payments are creating a snowball effect:
- Higher yields mean the government pays more in interest.
- More interest requires borrowing more money to repay the debt.
- More borrowing further drives up yields, creating a vicious cycle.
While the U.S. will not technically default (due to constitutional constraints), it may resort to inflationary measures to dilute its debt (by reducing the value of money, thereby reducing the actual amount of debt). However, this will lead to even higher inflation and further increases in yields, trapping the country in a cycle.
The real solution lies in fiscal discipline, such as reducing deficits and controlling spending. However, the political deadlock between the two parties on budget issues makes such reforms unlikely. In the short term, the market will continue to test the government's intervention measures to see how long they can last.
Conclusion
The Treasury Department's bond repurchase program is like applying a band-aid to a fever—it provides temporary relief but does not address the underlying issues. The root causes of rising yields—excessive money printing, fiscal deficits, AI-driven capital competition, and geopolitical tensions—are fundamental problems. Without addressing these, any short-term intervention will only provide temporary solutions, and yields will eventually return to an upward trend. This is not unique to the U.S.; it is a common challenge for countries with high debt levels around the world.