139****17192022-08-17 14:11:32
Which of the following statements best describes a feature of an American option? Early exercise of an American: put option is optimal only if the underlying is dividend paying. call option is never optimal if the underlying is dividend paying. put option that is deep in the money may be optimal. 这道题为什么不能选a呢?老师不是讲说会分红的American put会提前行权吗
回答(1)
Evian, CFA2022-08-18 10:34:02
ヾ(◍°∇°◍)ノ゙你好同学,
A说的太绝对了,及时在分红之后,S下跌,看跌期权不一定是深度价内
题目解析:
C. For a deep-in-the-money put option, early exercise may be optimal because the additional upside is limited. A is incorrect because the fact that the underlying is dividend paying does not justify early exercise in the case of a put option. B is incorrect because early exercise of a call option may be beneficial if a sufficiently high dividend can be captured.
是否分红,结果是股票价格S是否下降
如果分红,股票价格下跌,看跌期权IV=Max[0, X-S]上涨,投资者肯定是开心的,由于put option有收益上限(IV最大是:X-S=X-0=X),当投资者认为值得的时候,可以提前行权(美式)
如果不分红,IV不变
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