Alex Edmans (Wharton School, University of Pennsylvania) presenting 'The Effect of Liquidity on Governance ', a paper that studies the effect of stock liquidity on blockholders’ choice of governance mechanisms. The authors focus on hedge funds as they are unconstrained by legal restrictions and business ties, and thus have all governance channels at their disposal. Since the threat of governance, not just actual governance, can discipline managers, ehe authors use Section 13 filings to measure governance intent rather than only studying instances of actual governance. They find that liquidity increases the likelihood that a hedge fund acquires a block in a firm. Conditional upon acquiring a stake, liquidity reduces the likelihood that a blockholder governs through voice (intervention) – as evidenced by the greater propensity to file Schedule 13Gs (passive investment) rather than 13Ds (active investment). Liquidity is more likely to lead to a 13G filing if the manager’s wealth is sensitive to the stock price, consistent with governance through exit (trading). A 13G filing leads to positive announcement returns, especially in liquid firms. These two results suggest that liquidity does not dissuade blockholders from governing altogether, but instead encourages them to govern through exit rather than voice. The authors use decimalization as an exogenous shock to liquidity to identify causal effects.