We show that the 2004 SEC regulation requiring more frequent disclosures from active mutual funds unintendedly increased the profitability of trading by another set of informed investors, namely insiders. Cross-sectional analyses suggest that this increase in insiders' profits is due to mutual...

The post-earnings-announcement drift is a longstanding anomaly that conflicts with market efficiency. This study documents that the post-earnings-announcement drift occurs mainly in highly illiquid stocks. A trading strategy that goes long high-earnings-surprise stocks and short...

The post-earnings-announcement drift is a longstanding anomaly that conflicts with market efficiency. This study documents that the post-earnings-announcement drift occurs mainly in highly illiquid stocks. A trading strategy that goes long high-earnings-surprise stocks and short...