NO.PZ2025042401000060
问题如下：
The OAS of a callable bond is 75 basis points in a zero volatility environment. As interest rate volatility increases, the bond's OAS most likely:
选项：
A.decreases.
B.remains the same.
C.increases.
解释：
Solution
-
A is correct because as interest rate volatility increases, the OAS for the callable bond decreases.
-
B is incorrect because as interest rate volatility increases, the OAS for the callable bond decreases.
-
C is incorrect because as interest rate volatility increases, the OAS for the callable bond decreases.
- explain the calculation and use of option-adjusted spreads
OAS和callable，putable的关系。为什么选A
