各种option组合策略可不可以总结以下每种策略是否有limited gain/limited loss/unlimited gain/unlimited loss?比如short butterfly有limited gain。以为我看讲义上面也没有专门针对每种策略做这种总结,然后我看图也不是很明白,关键是题目有很多是让基于策略是否有limited gain/loss进行选择。麻烦能帮我总结下吗?多谢多谢!
covered call
protective put
collar
bull spread
bear spread
long butterfly spread, short butterfly spread
long straddle, short straddle