We show that the main claim in Dennis, Gerardi, and Schenone (JF forthcoming) (DGS), namely "that the documented positive correlation between common ownership and ticket prices stems from the market share component of the common ownership measure, and not the ownership and control components,"...

A product market is concentrated when a few firms dominate the market. Similarly, a labor market is concentrated when a few firms dominate hiring in the market. Using data from the leading employment website CareerBuilder.com, we calculate labor market concentration for over 8,000...

Using data on the near-universe of online US job vacancies collected by Burning Glass Technologies in 2016, we calculate labor market concentration using the Herfindahl-Hirschman index (HHI) for each commuting zone by 6-digit SOC occupation. The average market has an HHI of 3,953, or the...

In this paper, we study the effects of common ownership, the extent to which firms are linked via common owners, on employee earnings in U.S. local labor markets. Between 1999 and 2017, common ownership in local labor markets has more than doubled. Panel regressions show that employee earnings...

We develop a macroeconomic framework in which firms are large and have market power with respect to both products and labor. Each firm maximizes a share-weighted average of shareholder utilities, which makes the equilibrium independent of price normalization. In a one-sector economy, if returns...

Labor economics often assumes that wages w are equal to the marginal revenue product of labor MRP L. However, recent literature has shown that firms' market power allows them to pay wages substantially below marginal productivity. The markdown (MRP L - w)/w is our preferred measure of firms'...

We show that the main claim in Dennis, Gerardi, and Schenone (JF forthcoming) (DGS), namely “that the documented positive correlation between common ownership and ticket prices stems from the market share component of the common ownership measure, and not the ownership and control...

This paper develops a model of firm behavior in the context of oligopoly and portfolio diversification by shareholders. The management of each firm proposes a strategic plan to shareholders, and is evaluated based on the strategic plan. This leads to internalization and aggregation of...

The share of stocks beneficially owned by institutional investors has increased substantially over the last three decades. Together with a high and increasing level of concentration in the asset management industry, this trend implies that a small number of institutional investors now constitute...