We study the effects of a regulation passed in Israel that required supermarket chains to make the prices of all items sold in their brick-and-mortar stores publicly available online. Using a differences-in-differences research design and multiple complementary control groups, we show that...

Empirical research on the relationship between market congestion and the market competitive level largely falsifies the positive relationship predicted by theoretical models. In this paper, I exploit the airline industry network structure and focus on the level of congestion during periods in...