A+(-A)=0, what for? As for protection,

As for protection, holding a security is for the final exiting price.

- Turbulances en route to destination are irrelevant. Why care about price en route, and why need protection?

- Or, if destination is uncertain, why need to pick the security to begin with?

- Or, if one needs small drawdown as required by high leverage, protection may be needed to avoid being wiped out. But the protection comes at a price, which defeats the original purpose of high leverage. So why use high leverage to begin with?

所有跟帖： 

• 你看偶的贴是说保护，你一下子就把它推到极致。 -buydip?- ♀ (0 bytes) () 10/27/2019 postreply 11:06:28

• 正好我也想探讨一下这个话题，干脆就全部提出我的理解；欢迎探讨 -Labourse- ♂ (0 bytes) () 10/27/2019 postreply 11:15:24