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一只可爱的猪 · 2021年09月21日

这道题

* 问题详情,请 查看题干

NO.PZ201712110100000303

问题如下:

Based on Exhibit 2, Strategy 1 is profitable when the share price at expiration is closest to:

选项:

A.

$63.00.

B.

$65.24.

C.

$69.49.

解释:

A is correct.

The straddle strategy consists of simultaneously buying a call option and buying a put option at the same strike price. The market price for the $67.50 call option is $1.99, and the market price for the $67.50 put option is $2.26, for an initial net cost of $4.25 per share. Thus, this straddle position requires a move greater than $4.25 in either direction from the strike price of $67.50 to become profitable. So, the straddle becomes profitable at $67.50 – $4.26 = $63.24 or lower, or $67.50 + $4.26 = $71.76 or higher. At $63.00, the profit on the straddle is positive.

这道题没有考虑到delta吗,就是期权的价格会发生变化

1 个答案

Hertz_品职助教 · 2021年09月22日

嗨,爱思考的PZer你好:


同学你好~

这道题目问的是straddle策略的收益,不用考虑delta的哈

Delta衡量的是标的股票变化1%的时候,期权变化多少,即期权价格对标的资产的敏感性。本题的问题其实就是简单的在问straddle策略的收益特征,没有问也没有涉及整个组合对股价的敏感性是怎样的,所以完全不需要考虑delta问题的哈,同学在这里可能思考的有点复杂啦。

这里只需要确定straddle策略的两个均衡点,在均衡点两边是该策略的盈利区间,据此来解题即可哈~

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