问题如下图:
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请问答案里-13.32怎么算出来的?
NO.PZ2018101501000018 问题如下 Company M ha four-yeprojewith expansion option, whipen on the manthe enof the 1st year. Whether manis -high- or -low- in Years 1–4 will terminering the first year. The probabilities of -high- or -low- manare equal. The cost of capitis 12%. We shoulnotiththe expansion option will not exist if the initiinvestment is not ma. The taileinformation of the projeis given in the following tables.The initiproject: Aitioncash flows with the optionexpansion project: The NPV of the initiprojewithout the reoption is given to -13.32, what’s the NPV of projeinclung the expansion option? A.-$6.11 million B.$6.37 million C.$19.69 million B is correct.考点Evaluating Projects with ReOptions解析t=1时,如果是高需求,NPVexpansion = -100 + ∑t=13601.12t\sum_{t=1}^3\frac{60}{1.12^t}∑t=131.12t60= $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}∑t=131.12t30 = -$27.95 million,此时扩张期权不会执行。t=0时,ExpecteNPVexpansion = 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 第一年可以确定高需求,要expan话,原项目的现金流也应该确定为60吧。这样原项目的NPV会不会因此而改变?然后再加expansion project的NPV。
NO.PZ2018101501000018 问题求NPV of projeinclung the expansion option,而不是option value,为什么要做差呢?
NO.PZ2018101501000018 李老师上课是直接计算npv不要折现 cf0=0 cf1=-100 cf2-4=60 这样计算出来是-832.4 的npv 哪里计算错误? 计算出来在乘以prob才是最终的option vlaue
NO.PZ2018101501000018 $6.37 million $19.69 million B is correct. 考点Evaluating Projects with ReOptions 解析t=1时,如果是高需求,NPVexpansion = -100 + ∑t=13601.12t\sum_{t=1}^3\frac{60}{1.12^t}∑t=131.12t60= $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}∑t=131.12t30 = -$27.95 million,此时扩张期权不会执行。 t=0时,ExpecteNPVexpansion = 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?
NO.PZ2018101501000018 老师,在t1的时候进行比较,看NPV大于0的话,那我们就会行权,那么我们这时候只有在60的时候会行权,在30的时候就不行权了。 那为什么不就是把在60的t1=44.11/1.12,折现到0时间点,再加上原来的NPV就好了,而是还要再乘以0.5呢? 这个0.5我不是很理解,麻烦老师一下。谢谢!