The Treasury Yield Curve is usually upward sloping. One main reason for this is:

Question

BlackTom AI · Accepted Answer

Longer-term bonds carry a maturity (term) risk premium, which is why the Treasury yield curve is usually upward sloping.

1) Relevant knowledge points and concepts
- Yield curve: plot of Treasury yields versus maturity. An upward slope means longer maturities yield more.
- Expectations Hypothesis: long yields reflect the average of expected future short rates.
- Maturity (term) risk premium (also called term premium): additional yield investors require to compensate for interest-rate risk, price volatility and reinvestment uncertainty when holding longer maturities.
- Other factors: inflation expectations, credit risk (irrelevant for Treasurys), and liquidity premiums can also affect yields.

2) Step-by-step reasoning
- If investors were indifferent to maturity risk, the Expectations Hypothesis would make the yield curve equal to the average of expected short rates (flat if expectations are constant).
- In reality investors are risk averse and uncertain about future rates; they demand extra compensation to hold longer-term bonds.
- That incremental compensation adds to the average expected short-rate, lifting long-term yields relative to short-term yields and producing an upward slope.

3) Example calculation (intermediate steps)
- Suppose the expected 1-year rates for next two years are 2% (year 1) and 3% (year 2). Average expected rate = (2% + 3%)/2 = 2.5%.
- If investors demand a maturity risk premium of 0.5% for a 2-year bond, the 2-year yield = average expected short rate + term premium = 2.5% + 0.5% = 3.0%.
- Short 1-year yield = 2.0%; 2-year yield = 3.0% → upward sloping curve due mainly to the 0.5% maturity premium.

4) Why the correct answer is correct
- The maturity risk premium directly explains the systematic extra yield on longer Treasurys to compensate for greater duration risk and uncertainty; it is the principal reason for the typical upward slope.

5) Why other options are incorrect
- Option 2 (expected inflation): inflation expectations matter, but they are captured in expected short rates rather than the separate maturity premium; they are not the main structural reason for the usual upward slope.
- Option 3 (corporate yields vs Treasurys): credit risk differences affect corporate spreads, not the Treasury curve.
- Option 4 (government default): U.S. Treasurys are considered default-free for yield-curve explanations; default risk is not the driver of the normal upward slope.
- Option 5 (Liquidity Premium Theory): this is closely related — liquidity premiums are one component of the term/maturity premium, but the best concise choice is “The maturity risk premium.”

6) Conclusion
The maturity risk premium is the primary reason the Treasury yield curve is usually upward sloping; this matches the provided correct answer, “The maturity risk premium.”

The Treasury Yield Curve is usually upward sloping. One main reason for this is:单项选择题

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