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Fair · 2022年03月20日

可否将这题重新讲一遍,不太懂

NO.PZ2020033002000062

问题如下:

A six-year CDS on a AAA-rated issuer is offered at 100bp with semiannual payments assuming no couterparty risk. The annualized LIBOR rate paid every six months is 4.8% for all maturities.If the yield on a six-year annual coupon bond of this issuer is 7%, is there any

arbitrage opportunity? If yes, how much is the return of the arbitrage strategy?

选项:

A.

No, there is no arbitrage opportunity.

B.

Yes, buy the bond and the CDS with a risk-free gain of 2.2%.

C.

Yes, buy the bond and the CDS with a risk-free gain of 1.2%.

D.

Yes, short the bond and sell CDS protection with a risk-free gain of 1.2%.

解释:

C is correct.

考点:CDS

解析:

Because LIBOR is flat, the fixed-coupon yield is also 4.6%, creating a spread of 700480=220bp700-480=220bp on the bond. Going long the bond and short credit via buying the CDS yields an annual profit of 220100=120bp220-100=120bp.

可否将这题重新讲一遍,不太懂

2 个答案

DD仔_品职助教 · 2022年03月20日

嗨,爱思考的PZer你好:


这一部分在第15章一开始,有详细的讲解CDS的操作流程,同学如果记不太清了,可以回去再听一下这部分的视频。


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努力的时光都是限量版,加油!

DD仔_品职助教 · 2022年03月20日

嗨,从没放弃的小努力你好:


同学你好,

题目说,六年期的AAA级的CDS,半年付息一次,coupon rate是1%,没有对手方风险。年化的LIBOR利率每半年付息一次利率是4.8%,对每个期限都一样。如果六年期的年化coupon bond的YTM是7%,请问是否存在套利机会?

因为LIBOR利率对于所有期限都一样,都是4.8%,六年期的coupon bond利率是7%,credit spread是7%-4.8%=2.2%,代表因为存在违约风险所获得的溢价是2.2%,这里我们默认LIBOR是一个rf,那也就是说投资债券可以获得2.2%的回报率。

而CDS相当于一个保险,这个保险的费率是1%,如果我卖一个CDS保险可以获得1%的收益率。

这俩产品一个收益2.2%,一个收益1%,那我肯定是买收益率高的bond,同时买一个CDS保险支付出去1%的费率,可以获得2.2%-1%=1.2%的套利差额。

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努力的时光都是限量版,加油!

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