We study the determination of market power at the firm and industry levels when heterogeneous firms compete for sales to ex ante homogeneous buyers in a market with both directed and random search and free entry of firms that differ in productivity. Search and the distribution of productivity...

This paper examines the effect of green investments on market power. I measure the market power as markup following the method provided in De Loecker and Warzynski (2012). For green investments, I consider specifically the investments of firms in energy efficient technologies, both as the binary...

Using data from the Current Population Survey (CPS) for 1994-2023, we show that the union wage mark-up for immigrants averages about 0.1 log points, 0.04 log-points less than that for natives. Therefore, unionization is less beneficial for immigrants than natives in the United States. The...