Very simple, 如果特斯拉9月底接近400，你就

Buy 1 400 call

Sell 2 420 call

Buy 1 440 call.

• As long as Tsla stay under 420, you are extending the cc to 420 - (whatever premium you paid for the above) 
• If Telsa goes above 420 but below 440, you are extending cc to 420 - (stock price - 420)
• If Tesla goes above 440, then you are back to strike price of 400

Since you also have orignal premium when you sell 400 strike, you want to add this premium to the above P/L equation.

所有跟帖： 

• 十月份特斯拉衝過440的可能性不高，所以你可以耐性等待 -三心三意- ♂ (0 bytes) () 09/05/2025 postreply 14:11:03

• 太感謝了，這些內容我記在本子裏慢慢消化。 -小鬆鬆- ♀ (0 bytes) () 09/05/2025 postreply 14:58:54