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梦梦 · 2024年06月13日

有两个问题

NO.PZ2020021204000039

问题如下:

Approximately how many three-month Eurodollar futures contracts are necessary to hedge the six-month interest that will be paid on a USD 20 million bond? Assume that the six-month period starts at the maturity of the futures contract that will be used. (Ignore the differences between Eurodollar futures and FRAs mentioned in the chapter for this question.)

解释:

The change in the value of the instrument for a 1-basis point parallel shift in the interest rate is

USD 20,000,000 x 0.5 x 0.0001 = USD 1,000

This is 40 times USD 25. It follows that 40 contracts should be shorted.

老师好,1、这道题哪句话能看出duration是0.5呢?2、Eurodollar futures是利率每下降1bp,futures价格上涨25美金,duration=-25/0.01%,不应该等于25万吗?

2 个答案

pzqa27 · 2024年06月14日

嗨,爱思考的PZer你好:


1、虽然说了6个月,但是没说是无coupon的债券,不是只有coupon为0的债券,期限才是duration吗?

这个没有什么好纠结的,题目并没有给出其他可用的数据,只能这么估算了,尽管duration并不一定是0.5,但是近似0.5.

2、也就是说 modified duration=-(得塔p/p)/得塔r,这里的得塔r是1bp,不是1%?所有frm的题涉及modified duration的得塔r都是1bp?

这里准确说不是money duration,应该叫DV01更合适一些,不过都是duration家族的,原理是一样的。


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pzqa27 · 2024年06月13日

嗨,从没放弃的小努力你好:


1、这道题哪句话能看出duration是0.5呢?

被对冲债券是个6个月的债券,所以duration就约等于0.5了。

2、Eurodollar futures是利率每下降1bp,futures价格上涨25美金,duration=-25/0.01%,不应该等于25万吗?

利率下降1bp,债券价格上升1000,而对于Eurodollar futures,利率每变动1Bp,Eurodollar futures价格变动25,所以对冲债券1000的价格变化需要1000/25=40份合约。

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梦梦 · 2024年06月13日

1、虽然说了6个月,但是没说是无coupon的债券,不是只有coupon为0的债券,期限才是duration吗?2、也就是说 modified duration=-(得塔p/p)/得塔r,这里的得塔r是1bp,不是1%?所有frm的题涉及modified duration的得塔r都是1bp?

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