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phoebeqp · 2024年05月07日

swap rate到底是什么?

NO.PZ2018123101000027

问题如下:

Smith gathers information on spot rates for on-the-run annual-coupon government securities and swap spreads, as presented in Exhibit below.

Smith buys a four-year, zero-coupon corporate bond and then sell it after two years. Smith illustrates the returns from this strategy using the swap rate as a proxy for corporate yields. Smith should show a total return closest to:

选项:

A.

4.31%.

B.

5.42%.

C.

6.53%.

解释:

C is correct.

考点:考察Riding the yield curve策略

解析:由题干已知,Swap rate来代替公司债的收益率;四年期的Swap spread息差为0.70%,4年期的国债收益率Government spot rate 为4.05%,则4年期的swap rate = 4.05% + 0.70% = 4.75%。

因此,购买的4年期零息债券的价格为:

price=100(1+0.0475)4=83.058price=\frac{100}{{(1+0.0475)}^4}=83.058

两年期的公司债收益率为2年期的Swap rate, swap rate = 2.70% +0.30% = 3%,

4年期的零息债券持有2年后的卖出价格为:

price=100(1+0.0300)2=94.260price=\frac{100}{{(1+0.0300)}^2}=94.260

则这笔投资的年化总收益为:

94.26083.0581=0.0653=6.53%\sqrt{\frac{94.260}{83.058}}-1=0.0653=6.53\%

题目里面算出swap rate,可以用它来折现?但是课上说swap rate是一种par rate?par rate我理解就是每期现金流/pincipal的一个比率,应该是用来计算分子的?

所以swap rate到底是什么?为什么可以用来折现算价格?

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品职答疑小助手雍 · 2024年05月07日

同学你好,swap rate就是利率互换中的固定利率,算是可以一定期限收益率的均值。

题目说了可以近似用于折现Smith illustrates the returns from this strategy using the swap rate as a proxy for corporate yields

所以就直接当做折现率来用了。

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NO.PZ2018123101000027 问题如下 Smith gathers information on spot rates for on-the-run annual-coupon government securities answsprea, presentein Exhibit below.Smith buys a four-year, zero-coupon corporate bonanthen sell it after two years. Smith illustrates the returns from this strategy using the swrate a proxy for corporate yiel. Smith shoulshow a totreturn closest to: A.4.31%. B.5.42%. C.6.53%. C is correct.考点考察Ring the yielcurve策略解析由题干已知,Swrate来代替公司债的收益率;四年期的Swsprea差为0.70%,4年期的国债收益率Government spot rate 为4.05%,则4年期的swrate = 4.05% + 0.70% = 4.75%。因此,购买的4年期零息债券的价格为price=100(1+0.0475)4=83.058price=\frac{100}{{(1+0.0475)}^4}=83.058price=(1+0.0475)4100​=83.058两年期的公司债收益率为2年期的Swrate, swrate = 2.70% +0.30% = 3%,4年期的零息债券持有2年后的卖出价格为price=100(1+0.0300)2=94.260price=\frac{100}{{(1+0.0300)}^2}=94.260price=(1+0.0300)2100​=94.260则这笔投资的年化总收益为94.26083.058−1=0.0653=6.53%\sqrt{\frac{94.260}{83.058}}-1=0.0653=6.53\%83.05894.260​​−1=0.0653=6.53% 关于持有两年后的价格计算,为什么不是用f(2,4)来折现,而是用S2来折现呢

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