NO.PZ2018120301000027
问题如下:
Leah informs Molly that DFC has a single $500 million liability due in nine years, and she wants SD&R to construct a bond portfolio that earns a rate of return sufficient to pay off the obligation.
which of the portfolios in Exhibit 1 best minimizes the structural risk to a single-liability immunization strategy
选项:
A.
Portfolio 1
B.
Portfolio 3
C.
Portfolio 4
解释:
Correct Answer: C
C is correct. Structural risk to immunization arises from twists and non-parallel shifts in the yield curve. Structural risk is reduced by minimizing the dispersion of cash flows in the portfolio, which can be accomplished by minimizing the convexity for a given cash flow duration level. Because Portfolio 4 has the lowest convexity compared with the other two portfolios and also has a Macaulay duration close to the liability maturity of nine years, it minimizes structural risk
题目中提到公司的liability due in nine years,portfolio 3正好是9年,为什么不对呢?感觉选择convexity最小的成了唯一标准。