How does firm size explain cross-country differences in ownership concentration?

While a number of studies have examined ownership structure across countries, the literature has not yet reached a consensus as to how and why ownership concentration and the size sensitivity of ownership concentration vary across countries. Using a sample of 18,932 firms across 40 countries, we find that there is a negative relationship between firm size and ownership concentration and thus lower ownership concentration in countries with a high quality of governance. Meanwhile, in countries with weak governance, ownership concentration persists even as firms get larger. Our findings support the theory that a firm’s choice of optimal ownership structure depends on its quality of governance, which includes both vertical and horizontal governance. Our study also finds that civic capital, including ethical values, contribute to the variation of ownership structure across countries. The findings also potentially reconcile the currently conflicting empirical results in studies of ownership concentration around the world.