This paper estimates the profits to insiders when they trade their company's stock. We construct a rolling purchase portfolio' that holds all shares purchased by insiders over the previous year and an analogous sale portfolio' that holds all shares sold by insiders over the previous year. We...

We use the largest cross-country sample of reported share transactions by corporate insiders to date to establish that insiders in the majority of European countries do not make statistically significant abnormal trading profits. This finding stands in contrast to the earlier evidence from the...