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hbc0728 · 2020年03月29日

问一道题:NO.PZ2016082405000078

问题如下:

Which of the following statements regarding WWR and RWR is correct?

选项:

A.

A long put option is subject to WWR if both risk exposure and counterparty default probability decrease.

B.

A long call option experiences RWR if the interaction between risk exposure and counterparty default probability produces an overall decline in counterparty risk.

C.

Declining local currency decrease the position gain in a foreign currency transaction, while increasing risk exposure of the counterparty.

D.

The 2007-2009 credit crisis provides an example WWR from the perspective of a long who had sold credit default swaps (CDSs) as protection against bond issuers' default.

解释:

B  A long call option experiences BWR if risk exposure and counterparty default probability results in decreased counterparty risk. A long put option is subject to WWR if both risk exposure and counterparty default probability increase. Declining local currency can increase the position gain in a foreign currency transaction, while increasing counterparty risk exposure. The 2007-2009 credit crisis provides an example of WWR from the perspective of a long who had bought CDSs as protection against bond issuers’ default.

这道题的选项A和B可以解释一下吗,不知道从何下手?谢谢

1 个答案
已采纳答案

袁园_品职助教 · 2020年03月30日

同学你好!

选项A:当我买了一个 put option,股价越低我越赚钱,但是当股价下跌的时候其实公司(对手方)的 PD 是在上升的,就是我越赚钱他就越给不出钱,所以是WWR,所以选项 A 里不是 decrease 而是 increase

选项B:一般我们会说当 EAD 和 PD 相关性为负的时候,即EAD和PD此消彼长是一个 RWR,这里说的不是很严谨,只是说了 EAD 和 PD 一起考虑的时候会减低 counterparty risk,所以勉强选B,因为其他肯定是不对的

可以参考老师视频的讲解

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