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Kathy苏苏 · 2021年07月02日

comment 1

* 问题详情,请 查看题干

NO.PZ201812020100001103

问题如下:

Which of Avelyn’s comments regarding considerations in the bottom-up approach is most accurate?

选项:

A.

Comment 1

B.

Comment 2

C.

Comment 3

解释:

C is correct.

When an issuer announces a new corporate bond issue, the issuer’s existing bonds often decline in value and their spreads widen. This dynamic is often explained by market participants as an effect of increased supply. A related reason is that because demand is not perfectly elastic, new issues are often given a price concession to entice borrowers to buy the new bonds. This price concession may result in all of an issuer’s existing bonds repricing based on the new issue’s relatively wider spread. A third reason is that more debt issuance may signal an increase in an issuer’s credit risk.

老师,请按字面意思翻译下comment 1,谢谢。
1 个答案

pzqa015 · 2021年07月03日

嗨,努力学习的PZer你好:


Callable debt has a smaller Z spread than comparable non-callable debt.

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同学你好,

这句话的意思是与可比不含权债相比,callable的Z spread更小。这句话的表述错误的,正确的表述应该是与可不不含权债相比,callable的Z spread更大。

从两方面解释这句话:

1、与其他要素均一致的不含权债相比,含权债对于投资者来说相当于额外short了一份option(embedded option),这份option对于债券发行人有利(市场利率下降,可以提前行权赎回,从而以更低成本再融资),对于债券投资者不利(市场利率下降的时候会被动行权,被动收回本金,届时将以一个更低的市场利率再投资),所以,与可比不含权债相比,投资callable bond除了承担信用风险、流动性风险等常规风险外,还承担short option的风险,承担额外的风险应给予投资者额外的风险补偿,这些补偿都隐含在买入债券时债券价格所反应的Zspread中(callable bond买入价格低于可比不含权债),所以与可比不含权债相比,callable的Zspread 更大。

2、从OAS与Z spread的角度解释这句话。OAS是剔除权力影响后的spread,用来衡量剔除权益影响外的credit spread、liquidity spread等风险补偿,所以,对于不含权债来说,OAS=Z spread;对于callable bond,OAS=Z spread-option spread。根据这个公式,也可以判断出,callable bond的Z spread大于可比不含权债的Z spread(OAS).


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