成本不是0吧，股票當時現價好像是低於970？

所有跟帖： 

• 990 隻是一個比喻。是whatever price he was about to sell at that time -三心三意- ♂ (0 bytes) () 05/26/2025 postreply 21:28:42

• if you are about to click sell at "x" price, you can buy put -三心三意- ♂ (0 bytes) () 05/26/2025 postreply 21:29:26

• 唯一的缺點是股票漲飛，錯過了買到正股。不過如果已經有很大倉位也就不在乎了 -雲起千百度- ♀ (0 bytes) () 05/26/2025 postreply 21:33:28

• No.這個例子買put，賣cc，可能賣飛股票，哈哈，不會買股票 -BrightLine- ♂ (0 bytes) () 05/26/2025 postreply 21:35:36

• LOL，我今晚腦子已經不轉了。 -雲起千百度- ♀ (0 bytes) () 05/26/2025 postreply 21:39:37

• “可能賣飛股票” --- 所以前題條件是你已經決定要賣股票了 -三心三意- ♂ (0 bytes) () 05/26/2025 postreply 21:41:41