1234562020-11-03 13:08:46
Payoff of the long put =max[0,K-S(t)] and payoff of short call =-max[0,S(t)-K]=min[K-S(t)], such that the combination payoff =K-S(t).,我算出的combination怎么是2K-2S(t)呢?请教老师,谢谢
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Adam2020-11-03 17:42:48
同学你好,如下
这是分段函数:一段是ST小于K,其收益是K-ST
另一段是ST大于K,其收益是K-ST
两段相结合,仍是K-ST
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