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Ruthlessbaby · 2020年02月28日

问一道题:NO.PZ2019122802000034

问题如下:

Which of the following is not the goal of volatility trading strategy?

选项:

A.

To buy cheap volatility and sell more expensive volatility.

B.

To net out the time decay associated with options portfolios.

C.

To hedge the volatility change of the underlying assets.

解释:

C is correct.

The goal of volatility trading strategy is to buy cheap volatility and sell expensive volatility and to net out the time decay associated with options portfolios.

To net out the time decay associated with options portfolios.?怎么理解呀

2 个答案

星星_品职助教 · 2020年06月30日

@shelly0205

θ是二级学过的希腊字母,即△option value/△t,其中t是“passage of time”,所以θ<0,即随着时间的流逝,期权价值越来越小。这是一个不利的因素,也就是题干中所说的“time decay”

星星_品职助教 · 2020年02月28日

同学你好,

这个是衍生品里的知识点。由于同时买了一个期权,又卖了一个期权,所以两个期权的θ会对冲掉。

shelly0205 · 2020年06月30日

θ是指什么呀,谢谢

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