我們從optionseller.com的失敗中，學到了要買保險!
https://earlyretirementnow.com/2018/12/18/the-optionsellers-debacle/到期損益和期間損益是二回事，只要有足夠的波動，到期不會履約的選擇權，現在就會把你弄的很慘。
(下表出自於上方的文章內容)
End of story? Well, even a risky strategy like that can be managed properly by experienced finance professionals if they act responsibly. But the folks at OptionSellers did not. Here are the five steps that blew up the Option Sellers strategy:
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