03
Oct
11

Paper: Información privilegiada

Decoding Inside Information

Abstract

Exploiting the fact that insiders trade for a variety of reasons, we show that there is  predictable, identifiable “routine” insider trading that is not informative for the future  of firms. A portfolio strategy that focuses solely on the remaining “opportunistic”  traders yields value-weighted abnormal returns of 82 basis points per month, while  abnormal returns associated with routine traders are essentially zero. The most informed opportunistic traders are local, non-executive insiders from geographically concentrated, poorly governed firms. Opportunistic traders are significantly more likely to have SEC enforcement action taken against them, and reduce trading following waves of SEC insider trading enforcement.

Link al Paper


					
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