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frr07172018-04-02 15:33:48

A is correct. For an insurance policy, the amount of the loss that the insured is willing to bear is known as the deductible. For a protective put option, this amount is equivalent to the difference between the stock price and the put exercise price. Bochanski’s statement relates to the deductible. B is incorrect because a protective put’s time value and an insurance policy’s premium are considered to be equivalent. Neither of these are related to the protective put/insurance policy deductible. C is incorrect because a protective put’s stock volatility is analogous to the likelihood of loss for an insurance policy. A protective put’s time until expiration is analogous to the term of an insurance policy. None of these are related to the protective put/insurance policy deductible. A我懂, 但是B, C请老师分别解释下, 感谢!~

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Vincent2018-04-02 18:34:06

protective put strategy 里面考虑的是股票价格,行权价格,和期权费。B只考虑了期权费(upfront premium), 因为期权费含有time value和intrinsic value, 他提到了time value是期权费的一部分,所以只提到了期权费。C啥都没考虑。
题目问的是可能承担的最大损失,protective put strategy的最大损失是X-P-S. 从公式看我们只考虑行权价格,put的premium和股票价格。

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