While prior studies find that returns on option straddles are generally negative, we show that returns on straddles purchased prior to earnings announcements are actually positive. The earnings announcement impact is compounded when the pre-portfolio formation volatility is low (high) and the...

We find strong evidence that net insider selling is positively associated with future stock return volatility, consistent with insider selling increasing outside investors' uncertainty. The positive effect of net insider selling is significantly stronger when the volatility is measured around...