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lion · 2023年03月08日

求解释

NO.PZ2016082402000027

问题如下:

A one-year European put option on a non-dividend-paying stock with strike at EUR 25 currently trades at EUR 3.19. The current stock price is EUR 23 and its annual volatility is 30%. The annual risk-free interest rate is 5%. What is the price of a European call option on the same stock with the same parameters as those of this put option? Assume continuous compounding.

选项:

A.

EUR 1.19

B.

EUR 3.97

C.

EUR 2.41

D.

Cannot be determined with the data provided

解释:

ANSWER: C

By put-call parity,     c=p+SerTKerT=3.19+2325e0.05×1=3.190.78=2.409\;\;c=p+Se^{-r\ast T}-Ke^{-rT}=3.19+23-25e^{-0.05\times1}=3.19-0.78=2.409. Note that the volatility information is not useful.

同学你好,第一句话你可以分开来看:有一个执行价格是25的put option,这个option现在市面上价值是3.19元。 以上是品智老师的讲解,但根据答案25是K值呀,3.19是put option的值吗?麻烦将题干中数据与CK  PS值对应,这个话明显看不出来K值是25?这题里没说呀,3.19是看跌期权哪句话看出来来的呀,请对应翻译,

1 个答案

品职答疑小助手雍 · 2023年03月08日

这个就是纯定义的问题了:

K就是执行价格,也就是25;

P就是put option的价格,3.19;

S是目前的股价23;

C是call option的价格,也就是本题利用put call parity求的值。

至于你说的从哪里看出来K是25,put option价格是3.19的问题:

1、如果是英语理解的问题:strike at 25英文直接翻译就是在25块钱执行,第一句话上来就说了put option也就是句子的主语,最后写明价格是3.19,其意思就是put option的价格是3.19,觉得理解不了的话,建议题目第一句完整的话放百度翻译里翻译一下。

2、如果不是英语的问题,那就是对定义理解的问题:这里全都是最基础的定义里应该知道的含义,如果看不懂的话建议先看一下基础班,了解定义之后再做练习题。

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NO.PZ2016082402000027问题如下 A one-yeEuropeput option on a non-vinpaying stowith strike EUR 25 currently tras EUR 3.19. The current stopriis EUR 23 anits annuvolatility is 30%. The annurisk-free interest rate is 5%. Whis the priof a Europecall option on the same stowith the same parameters those of this put option? Assume continuous compounng. EUR 1.19 EUR 3.97 EUR 2.41 Cannot terminewith the ta provi ANSWER: Cput-call parity,     c=p+Se−r∗T−Ke−rT=3.19+23−25e−0.05×1=3.19−0.78=2.409\;\;c=p+Se^{-r\ast T}-Ke^{-rT}=3.19+23-25e^{-0.05\times1}=3.19-0.78=2.409c=p+Se−r∗T−Ke−rT=3.19+23−25e−0.05×1=3.19−0.78=2.409. Note ththe volatility information is not useful.​同学你好,第一句话你可以分开来看有一个执行价格是25的put option,这个option现在市面上价值是3.19元。以上是品智老师的讲解,但根据答案25是K值呀,3.19是put option的值吗?麻烦将题干中数据与 PS值对应

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NO.PZ2016082402000027问题如下 A one-yeEuropeput option on a non-vinpaying stowith strike EUR 25 currently tras EUR 3.19. The current stopriis EUR 23 anits annuvolatility is 30%. The annurisk-free interest rate is 5%. Whis the priof a Europecall option on the same stowith the same parameters those of this put option? Assume continuous compounng. EUR 1.19 EUR 3.97 EUR 2.41 Cannot terminewith the ta provi ANSWER: Cput-call parity,     c=p+Se−r∗T−Ke−rT=3.19+23−25e−0.05×1=3.19−0.78=2.409\;\;c=p+Se^{-r\ast T}-Ke^{-rT}=3.19+23-25e^{-0.05\times1}=3.19-0.78=2.409c=p+Se−r∗T−Ke−rT=3.19+23−25e−0.05×1=3.19−0.78=2.409. Note ththe volatility information is not useful.为什么第一句话有个卖权执行价格是25,近期交易价格为3.19,所以没太理解第一句话

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