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he123456 · 2022年03月23日

答案解释的有问题吧

NO.PZ2016082404000035

问题如下:

Which of the following statements is incorrect?

选项:

A.

  The vega of a European-style call option is highest when the option is at-the-money.

B.

  The delta of a European-style put option moves toward zero as the price of the underlying stock rises.

C.

  The gamma of an at-the-money European-style option tends to increase as the remaining maturity of the option decreases.

D.

  Compared to an at-the-money European-style call option, an out-of-the- money European-style option with the same strike price and remaining maturity has a greater negative value for theta.

解释:

ANSWER: D

Vega is highest for ATM European options, so statement A is correct. Delta is negative and moves to zero as S increases, so statement B is correct. Gamma increases as the maturity of an ATM option decreases, so statement C is correct. Theta is greater (in absolute value) for short-term ATM options, so statement D is incorrect.

关于D选项,答案解释错误的原因:Theta is greater (in absolute value) for short-term ATM options, so statement D is incorrect.我觉得和选项表述的不是一回事,我对D选项的理解是:对于theta,无论是call还是put,都小于0,ATM时|theta|最大,OTM和ITM时,with the same strike price and remaining maturity,|theta|更小。


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品职答疑小助手雍 · 2022年03月23日

同学你好,没有任何的问题啊,D选项说的是:相比于ATM的期权,OTM的期权theta更负(也就是绝对值越大)。这是错的,所以选D。

解析的意思就是ATM的短期的期权,theta的绝对值更大,这包含了ATM比in或者out TM的期权theta绝对值大的意思(这句话跟你说的意思一样的)。

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NO.PZ2016082404000035 问题如下 Whiof the following statements is incorrect?   The vega of a European-style call option is highest when the option is at-the-money.   The lta of a European-style put option moves towarzero the priof the unrlying storises.   The gamma of at-the-money European-style option ten to increase the remaining maturity of the option creases.   Compareto at-the-money European-style call option, out-of-the- money European-style option with the same strike prianremaining maturity ha greater negative value for theta. ANSWER: D Vega is highest for ATM Europeoptions, so statement A is correct. lta is negative and moves to zero S increases, so statement B is correct. Gamma increases the maturity of ATM option creases, so statement C is correct. Theta is greater (in absolute value) for short-term ATM options, so statement is incorrect. C,随着到期日临近,the money 的gamma上升;in/out the money 的gamma下降。请分别一下为什么?

2024-04-13 21:18 1 · 回答

Whiof the following statements is incorrect?   The vega of a European-style call option is highest when the option is at-the-money.   The lta of a European-style put option moves towarzero the priof the unrlying storises.   The gamma of at-the-money European-style option ten to increase the remaining maturity of the option creases.   Compareto at-the-money European-style call option, out-of-the- money European-style option with the same strike prianremaining maturity ha greater negative value for thet ANSWER: Vega is highest for ATM Europeoptions, so statement A is correct. lta is negative anmoves to zero S increases, so statement B is correct. Gamma increases the maturity of ATM option creases, so statement C is correct. Theta is greater (in absolute value) for short-term ATM options, so statement is incorrect. 老师您好,解析里说 Theta is greater (in absolute value) for short-term ATM options, 这个没错。可是的是 a greater negative value for theta啊,这也是对的啊,又不是比较绝对值之后值的大小。是我英文理解的问题吗?

2020-05-08 21:44 1 · 回答

请问C的remaining maturity不是应该是快到期的时间么?为什么里面直接把它当成两个不一样maturity的option来看了?

2019-11-14 09:42 2 · 回答

是理解不了

2019-10-31 21:51 1 · 回答