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C · 2022年01月26日

问题

NO.PZ2018101501000018

问题如下:

Company M has a four-year project with an expansion option, which depends on the demand at the end of the 1st year. Whether demand is -high- or -low- in Years 1–4 will be determined during the first year. The probabilities of -high- or -low- demand are equal. The cost of capital is 12%. We should notice that the expansion option will not exist if the initial investment is not made. The detailed information of the project is given in the following tables.

The initial project:

Additional cash flows with the optional expansion project:

The NPV of the initial project without the real option is given to be -13.32, what’s the NPV of project including the expansion option?

选项:

A.

-$6.11 million

B.

$6.37 million

C.

$19.69 million

解释:

B is correct.

考点:Evaluating Projects with Real Options

解析:t=1如果是高需求,NPVexpansion = -100 + t=13601.12t\sum_{t=1}^3\frac{60}{1.12^t}= $44.11 million,此时扩张期权会执行如果是低需求,NPVexpansion = -100 +t=13301.12t\sum_{t=1}^3\frac{30}{1.12^t} = -$27.95 million,此时扩张期权不会执行

t=0,Expected NPVexpansion = 0.5*44.11/1.12 = $19.69 million

因此在考虑了扩张期权之后的NPV = -13.32 + 19.69 = $6.37 million

既然在year1就已经知道现金流是60还是30了,为什么算期权价值还要乘0.5呢,直接按60算npv不可以吗?

1 个答案

王琛_品职助教 · 2022年01月27日

嗨,爱思考的PZer你好:


同学也说了,知道现金流是 60 还是 30 的时间点是 year 1

而现在是 year 0,所以当下我们并不知道一年后到底现金流是多少,所以需要考虑两种情况的概率

如果按同学所说:直接按 60 算 npv,相当于改了题目背景,变成 1 年后,100% 确定期间现金流是 60 了

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