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粉红豹 · 2020年01月10日

问一道题:NO.PZ201812020100000703

* 问题详情,请 查看题干

问题如下:

The answer to Prégent’s question is that the portfolio would most likely experience:

选项:

A.

a loss.

B.

no change.

C.

a gain.

解释:

A is correct.

Short maturity at- or near-the-money options on long-term bond futures contain a great deal of convexity. Thus, options increase the convexity of the French client’s portfolio. Options are added in anticipation of a significant change in rates. If the yield curve remains stable, the portfolio will experience a loss from both the initial purchase price of the options and the foregone interest income on the liquidated bonds

老师,答案讲解中的最后一句“ foregone interest income on the liquidated bonds.”怎么理解啊?

1 个答案
已采纳答案

发亮_品职助教 · 2020年01月10日

嗨,爱思考的PZer你好:


sell some long-term bonds、purchase short maturity at-the-money options on long-term bond futures

The portfolio’s duration would remain unchanged.


他的策略是这样,卖出一些长期债券,同时买入Options,并且保证了买卖前后组合的Duration不变。

所以,我们可以知道,他是想调大组合的Convexity;如果收益率曲线可以发生变动,那就可以收获Convexity带来的涨多跌少的好处。

如果收益率曲线Remain stable,我们做的Buy Convexity策略显然是失效了。那损失的收益有哪些呢?

1、买Option付出的期权费;

2、我们卖出了长期债券,所以长期债券本身的Coupon也损失掉了,这就对应最后一句话“foregone interest income on the liquidated bonds”

损失掉了Liquidated bonds带来的Interest income.


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