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胖干儿 · 2023年12月22日

我没明白这个题为什么一定是short 2年期,long 10年期

NO.PZ2021120102000009

问题如下:

An active investor enters a duration-neutral yield curve flattening trade that combines 2-year and 10-year Treasury positions. Under which of the following yield curve scenarios would you expect the investor to realize the greatest portfolio gain?

选项:

A.

Bear steepening

B.

bull flattening

C.

Yield curve inversion

解释:

C is correct.

A duration-neutral flattening trade involves a short 2-year Bond position and a long 10-year bond position, which have a matched duration or portfolio duration of zero. This portfolio will realize a gain if the slope of the yield curvethat is, the difference between short-term and long-term yieldsdeclines. Yield curve inversion is an extreme version of flattening in which the spread between long-term and short-term yields-to-maturity falls below zero.

The bear steepening in A involves an unchanged 2-year yield-to-maturity with a rise in the 10-year yield-to-maturity, causing a portfolio loss. The bull flattening in B combines a constant 2-year yield-to-maturity with lower 10-year rates, resulting in a gain on the 10-year bond position and an unchanged 2-year bond position.

如题

1 个答案

pzqa015 · 2023年12月24日

嗨,从没放弃的小努力你好:


这道题说的是要用2年期与10年期债券构建一个duration neutral的策略,这种策略在收益率曲线flatten下获得最大收益,然后让选出合适的flatten情形。

我们先分析duration neutral

要想duration neutral,2年期债与10年期债肯定是相反头寸,即一个是Long,一个是short。

如果想在收益率曲线flatten下有利可图,可以判断2年期是short头寸,10年期是Long头寸(假设收益率曲线下降,2年期利率下降的少,10年期利率下降的多,也就是bull flatten,显然,只有long 10年期,short 2年期,才会在duration neutral的条件下有收益,若long 1年期,short 10年期,是有亏损的)。

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