吴同学2020-01-28 15:24:49
视频解答中,对于A的解析有疑问,oas确实是在zspread基础上调整的,a选项与书中的解释,主要差别在added to这里,老师能否再说下a的问题在哪里。
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Danyi2020-01-31 15:39:48
同学你好,
这道题目的输入有一定问题,正确的题目如下:
Which of the following statements regarding the option adjusted spread (OAS) is least accurate? The option adjusted spread:
A. is the spread added to the Treasury spot rate curve that the bond would have if it were option-free.
B. is the spread that accounts for non-option characteristics like credit risk, liquidity risk, and interest rate risk.
C. for a putable bond is the Z-spread minus the cost of the option.
答案选C.
此题问的是least accurate, 因为对于 putable bond 来说,它的 OAS 大于 Z-spread, 相当于 Z-spread + value of put option,C是minus,所以错误。
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