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Answer: Incorporates drift as a premium to interest rates that remains constant over time.
## Explanation The Ho-Lee Model is a no-arbitrage model of the term structure of interest rates that incorporates a time-dependent drift term. **Key characteristics of the Ho-Lee Model:** - **Constant drift parameter**: The model incorporates drift as a deterministic function of time that remains constant over time - **No mean reversion**: Unlike the Vasicek or Cox-Ingersoll-Ross models, the Ho-Lee Model does not assume that interest rates revert to a long-run equilibrium value - **Arbitrage-free**: The model is calibrated to fit the current term structure of interest rates - **Time-dependent volatility**: The model allows for time-dependent volatility in interest rates **Why option B is correct:** The Ho-Lee Model specifically incorporates a constant drift premium to interest rates over time, making it different from models that have time-varying risk premiums or mean reversion characteristics. **Why other options are incorrect:** - **A**: Incorrect - The Ho-Lee Model does incorporate a risk premium through its drift term - **C**: Incorrect - The drift in Ho-Lee is constant over time, not changing - **D**: Incorrect - This describes mean-reverting models like Vasicek, not Ho-Lee
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An analyst is looking at various models used to incorporate drift into term structure models. The Ho-Lee Model:
A
Incorporates no-risk premium to the interest rate model allowing rates to vary according to their volatility.
B
Incorporates drift as a premium to interest rates that remains constant over time.
C
Allows for a risk premium to be applied to interest rates that changes over time.
D
Incorporates drift into the model following the assumption that rates revert to the long-run equilibrium value.