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...

We examine merging firms' additions and removals of products for a sample of 66 mergers across a wide variety of consumer packaged goods markets. We find that mergers lead to a net reduction in the number of products offered by merging firms. Merging firms tend to both drop and add products at...

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...

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 dissertation proposes a...

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...