越寬的spread,不僅max gain potential更高, 而且break even point也可以更遠,在急跌的時候可以很安心。不過缺點就是open時收的premium會少很多。 It is a tradeoff you have to make when you decide to open a position.
If you are worried now, you can roll one of the short leg to next month (or weeks), and lower down strike a little bit. This will give you more breathing room, and a better BE point.
上麵三心和任靜鍋說的挺好,剛開倉時就要對worst case有足夠的心理準備,並做好風控。 在開倉時,一定要在腦子裏過一遍P&L圖,估算一下虧損區間和概率,問自己max loss是不是能接受的。