如果你有現金在帳戶裏， 結果是一樣的。

margin requirments are the same as well.

but if you don't have enough cash to buy the stock but borrow from margin, sell puts is more economical as you don't have to pay the margin interest rate, but more just tax free rates in the put. 

 

所有跟帖： 

• 這就是我說的，我沒有足夠現金但也不必要付利息 -BrightLine- ♂ (0 bytes) () 07/03/2025 postreply 19:36:04

• 你得看一下Put call Parity，就懂了。靠的價格，比撲的價格更高，差別就是利息。 -BullishSolar- ♂ (0 bytes) () 07/03/2025 postreply 19:45:22

• 正解！ -opst- ♂ (299 bytes) () 07/03/2025 postreply 19:48:17

• 這就是有意思的地方了，考慮到無風險利率，相同strike的call時間價值會比put多 -opst- ♂ (281 bytes) () 07/03/2025 postreply 19:42:23

• 仔細想的話，還要考慮IV -abc-nezha- ♂ (41 bytes) () 07/03/2025 postreply 20:55:46