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ZF Everyday · 2021年03月20日

对应基础讲义页数

NO.PZ2019070101000005

问题如下:

Which of the following statements is least correct about implied volatility method?

选项:

A.

Implied volatility is lower than realized volitility on average.

B.

Model-dependent is one of the most important shortcomings of implied volatility method.

C.

Implied volatility can react immediately to market conditions.

D.

The advantage of implied volatility method is that it is a forward-looking and preditive measure.

解释:

A is correct.

考点:Implied volatility Method

解析: 这道题是选出说法错误的选项。 implied volatility method是通过采用定价模型,根据市场价格计算volatility 来预测future volatility的一种方法。因为采用市场价格,所以它可以快速反应市场状况,C选项正确,但是最主要的缺点就是模型依赖,如果模型错误,算出的结果也是错误的。B选项正确。因为市场价格往往可以反映对未来的预期,所以这个方法是一个forward looking的方法,D选项均正确。

实证经验表明,implied volatility往往是高于实际的volatility,所以A选项不正确。

请问B和D 选项对应基础讲义页数

1 个答案
已采纳答案

品职答疑小助手雍 · 2021年03月20日

嗨,爱思考的PZer你好:


Financial Markets And Products基础班的503页说了如果按BSM,那implied volatility是固定的,但是实际上不是这样,所以基于BSM算的波动率存在model-dependent的缺点。

D选项在原版书48页。Implied volatility is the volatility implied by options prices observed in the market. It is a forward-looking estimate of volatility and is often found to be more accurate than an estimate produced from historical data.

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