We construct a novel data set to show that, between 2003-2020, up to one-fifth of America's largest firms had a non-financial blockholder or insider as their largest shareholder. Blockholders and insiders tend to be less diversified than institutional investors. Measures of "universal" and...

We construct a novel data set to show that, between 2003-2020, up to one-fifth of America’s largest firms had a non-financial blockholder or insider as their largest shareholder. Blockholders and insiders tend to be less diversified than institutional investors. Measures of “universal” and...

A fast-growing legal literature commenting on a set of empirical papers alleging anticompetitive effects of common ownership claims that the reported effects, if true, would imply that corporate executives violate their fiduciary duty: whereas acting in the interest of common owners can help...

We construct and analyze a new data set on U.S. corporate ownership to study how the inclusion of blockholders' and corporate insiders' holdings affects the measurement of common ownership among America's largest publicly traded firms. Including blockholders’ and insiders’ holdings reveals...

Using a new dataset of corporate voting-rights from 1971 to 2015, we find that young dual-class firms trade at a premium and operate at least as efficiently as young single-class firms. As dual-class firms mature, their valuation declines, and they become less efficient in their margins,...