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wxy · 2023年08月10日

隐含波动率与价外得关系,完全看不懂答案

Exhibit 2Implied Volatility Curve

Strike Price Implied Volatility

700 18.71

710 17.98

720 17.38

730 16.69

740 15.83

750 15.40

760 14.50

770 14.03

780 13.21

790 12.11

800 11.09


Question

Which of the following would Messer most likely conclude from the implied volatility data in Exhibit 2 if he excludes the effects of moneyness and time to expiration?


A.Using out-of-the-money options to hedge is more expensive than establishing a long position with out-of-the-money options.


B.Using out-of-the-money options to establish a long position is more expensive than establishing a short position using out-of-the-money options.


C.Using out-of-the-money options to establish either long or short positions is more expensive than using at-the-money options.


Solution

A is correct. Implied volatility is higher for lower strike prices than for higher strike prices; therefore, out-of-the-money put options will generally be more expensive than out-of-the-money call options. Implied volatilities of options with lower strike prices are higher than those with higher strike prices.


B is incorrect. Implied volatility is higher for lower strike prices than for higher strike prices; therefore, out-of-the-money put options will generally be more expensive than out-of-the-money call options. Implied volatilities of options with lower strike prices are higher than those with higher strike prices.


C is incorrect. This is only the case if implied volatility is higher for out-of-the-money options than for at-the-money, as in a normal skew (volatility smile).

2 个答案

Lucky_品职助教 · 2023年08月15日

嗨,爱思考的PZer你好:


对于同一标的资产的虚值认购期权和虚值认沽期权,由于市场对标的资产上涨的预期比下跌的预期更乐观,因此虚值认购期权的隐含波动率通常会比虚值认沽期权更低。也就是看涨期权的隐含波动率会小于看跌期权,大家对上涨的预期波动比较小。

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努力的时光都是限量版,加油!

Lucky_品职助教 · 2023年08月11日

嗨,从没放弃的小努力你好:


根据题目中给出的隐含波动率数据,我们可以得出以下结论:

隐含波动率在低行权价时较高,在高行权价时较低。因此,虚值认购期权的隐含波动率通常会比虚值认沽期权更低。行权价较低的期权的隐含波动率高于行权价较高的期权。

根据以上结论,我们可以排除选项B和C。

正确答案是A。通过排除行权价和到期时间的影响,我们得知使用虚值认沽期权进行对冲比使用虚值认购期权更昂贵。

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就算太阳没有迎着我们而来,我们正在朝着它而去,加油!

wxy · 2023年08月13日

还是不太懂:虚值认购期权的隐含波动率通常会比虚值认沽期权更低。??

wlai · 2024年09月19日

请问, 是如何看出A选项里的”认沽期权对冲“以及”认购期权“?因为只写了OTM,没有写call option 或 put option啊。 翻译过来应该是:对冲虚值期权比建仓虚值期权更贵?但这个怎么理解呢? A. Using out-of-the-money options to hedge is more expensive than establishing a long position with out-of-the-money options. 此外,SP变大,IV变大,X-S,是不是这个Exhibit 2 Curve要理解成put options curve啊? 麻烦讲解,谢谢!

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