虎嗅

The U.S. Treasury is stepping in to rescue U.S. debt. Can the storm in the bond market come to an end?

原文:美国财政出手救美债了,债市风暴能否终结?

Summary of Key Points

The U.S. Treasury Department will increase its purchases of long-term U.S. bonds with a maturity of over 10 years starting from September 9th, raising the maximum amount per purchase from $2 billion to $4 billion. As soon as this news was announced, the yield on 30-year U.S. bonds dropped by 8 basis points (0.08%). This is because the increased purchases have boosted market demand, driving up bond prices. Since there is an inverse relationship between bond prices and yields, the yield decreased accordingly.

Detailed Analysis

1. [U.S. Bond Repurchases: The Treasury Department's Action of “Buying Back Old Bonds”]

Simply put, U.S. bond repurchases involve the Treasury Department buying back previously issued bonds from the market. To illustrate: Imagine you borrowed money from a friend and wrote a promissory note (a bond). Now that you have more funds available, you buy back that note and destroy it, effectively repaying part of the debt in advance. The Treasury Department does this to make the market for long-term bonds more active—some old bonds become less attractive for trading over time (similar to old clothes stored in a closet that are hard to sell). By acting as a buyer, the Treasury Department helps institutions or individuals holding these bonds to liquidate them and overcome difficulties in selling.

2. [Why Focus on Bonds with a Maturity of Over 10 Years?]

Long-term bonds with a maturity of over 10 years face a challenge in terms of liquidity (fewer transactions). For example, if you hold a 20-year U.S. bond and try to sell it, you might not find a buyer and have to sell it at a discount. By purchasing these old bonds, the Treasury Department helps clear the market inventory, allowing these bonds to circulate more freely. Additionally, the yields on long-term bonds serve as a benchmark in global financial markets (interest rates for mortgages and corporate loans are often based on them), which helps stabilize the long-term bond market and reduce overall market volatility.

3. [Doubling of the Maximum Purchase Amount: A Signal of Increased Efforts]

The maximum purchase amount has been doubled from $2 billion to $4 billion, indicating that the Treasury Department is making a significant commitment to stabilizing the long-term bond market. This sends a clear message to the market that the government is committed to supporting it. For investors, this signals that the government is providing support, which can boost their confidence and discourage them from selling long-term U.S. bonds.

4. [The Logic Behind Yield Drops: The Inverse Relationship Between Bond Prices and Yields]

There is an inverse relationship between bond prices and yields, similar to a seesaw: more buyers lead to higher bond prices and lower yields, while more sellers lead to lower bond prices and higher yields. For instance, a bond with a face value of $100 and an annual interest rate of 5% would have a yield of about 4.76% if sold for $105. If more buyers enter the market and drive the price up to $110, the yield would drop to about 4.54%. The increased purchases by the Treasury Department have raised bond prices, resulting in the observed yield decline.

5. [Indirect Impacts on Ordinary People: No Need for Panic, but Be Cognizant]

For individuals, the direct impact is minimal, but there are two indirect aspects to consider:

  • If you invest in funds that hold U.S. bonds (such as QDII funds), a decrease in long-term U.S. bond yields might lead to a slight increase in the net value of these funds (since the fund’s assets appreciate with rising bond prices).
  • U.S. bond yields serve as a global benchmark for interest rates. A decline in them could potentially affect bond yields in other countries, which may in turn influence domestic mortgage and consumer loan rates, although this transmission process is usually slow and doesn’t need to cause excessive concern.

In summary, this action by the U.S. Treasury Department is aimed at stabilizing the long-term bond market. The impact on ordinary people is mainly indirect, so there’s no need for excessive worry.