Using comprehensive timestamp data on earnings announcements collected from newswires, we show that earnings news announced within trading hours results in approximately 50% smaller immediate reaction compared to similar earnings announced outside trading hours. Negative news tends to be...

We examine the nature of information contained in insider trades prior to corporate events. Insiders' net buying increases before open market share repurchase announcements and decreases before seasoned equity offers. Higher insider net buying is associated with better post-event operating...