1、买入马鞍式期权组合 (Long the Straddle)2、卖出马鞍式期权组合 (Short the Straddle)3、买入勒束式期权组合 (Long the Strangle) 4、卖出勒束式期权组合 (Short the Strangle) 5、牛市认买期权套利 (Bull Call Spre...
Both theshort strangle and theshortstraddle strategies employed on Pfizer today indicate investors expect volatility in the price of the underlying shares to decline going forward.