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Simon2024-01-10 14:40:25
同学,上午好。
此题思路是计算exhibit 1 中的dollar duration,然后和liability的dollar duration计算。看是否匹配
然后exhibit 1 需要作以下调整:
1. treasury bonds Strips会新增加 500m(make a $500 million contribution to fully fund the plan and invest the funds in Treasury STRIPs)
2. 题干中说,reallocate pension investments away from the fund that presents the greatest contingent claim risk and into the long corporate bond fund,其中有 greatest contingent claim risk的是MBS,所以将MBS中的700,000要调整到long corporate bond fund中。
然后,根据这两个信息,重新计算exhibit 1 中的dollar duration,然后和liability的dollar duration计算。看是否匹配。
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所以最后是用Dollar Duration ($ thousands)和500m比较吗?
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对的,同学,你的理解是正确的。但是liability的dollar duration是4 billion×14=56000million
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4 billion和14是怎么来的?我看解析是在每一项用New Market Value ($ thousands)乘以Duration (years)得出Dollar Duration ($ thousands)。然后再把Dollar Duration ($ thousands)加总的结果和500million比较,然后两个数字差不多。
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4billion和14是题干给的条件 (the pension liability has a duration of 14 years and a present value of $4 billion)
解析是加总得到55,998,750,然后和56,000,000比较,两个数字差不多。
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