This paper studies the long-term effect of hedge fund activism on the productivity of target firms using plant-level information from the U.S. Census Bureau. A typical target firm improves its production efficiency in the three years after an activist intervention, and the improvements are most...

We test the empirical validity of a claim that has been playing a central role in debates on corporate governance--the claim that interventions by activist hedge funds have a negative effect on the long-term shareholder value and corporate performance. We subject this claim to a comprehensive...