In a market for differentiated products, firms have the ability to collude on the choice of products offered in addition to or in lieu of colluding on the prices charged for those products. However, the empirical literature has only considered price collusion. This paper proposes a methodology...

Many data sources show a disparity among racial and ethnic groups regarding participation in and contributions to 401(k) plans. White workers participate at a higher rate and contribute a higher percentage than African American and Hispanic workers. However, few studies have explored whether...

This paper investigates firms’ post-merger product repositioning. We compile information on conglomerate firms’ additions and removals of products for a sample of 61 mergers and acquisitions across a wide variety of consumer packaged goods markets. We find that mergers lead to a net...

We study changes in markups across 72 product markets from 2006 to 2018. A growing literature has documented a rise in markups over time using a production function approach; we instead employ the standard microeconomic method, which is to estimate demand and then invert firms’ first-order...