Does Common Ownership Really Increase Firm Coordination?

A growing body of evidence concludes that common ownership caused cooperation among firms to increase and competition to decrease. We take a closer look at four approaches used to identify these effects. We find that the effects the literature has attributed to common ownership are caused by other factors, such as differential responses of firms (or industries) to the financial crisis. We propose a modification to one of the previously used empirical approaches, which is less sensitive to these issues. Using this to re-evaluate the link between common ownership and firm outcomes, we find little robust evidence that common ownership affects firm behavior.