Administrative tax data indicate that U.S. top income and wealth shares are substantial and increasing rapidly (Piketty and Saez 2003, Saez and Zucman 2014). A key reason for using administrative data to measure top shares is to overcome the under-representation of families at the very top that...

This paper relates firm location choice and consumer search. Firms that cluster together attract consumers by facilitating price comparison, but clustering increases the intensity of local competition. I construct a simple model which shows that firms may choose head-on competition by locating...

In his classic Papers relating to Political Economy (1897), Francis Edgeworth demonstrated that when duopolists have limited productive capacity, there may be no Nash equilibrium in prices. One feature of Edgeworth's model is that consumers are assumed to meet with the duopolists at the same...

Using a new dataset, we document a systematic pattern in the demographic characteristics of car buyers over the model year: as vehicle prices fall over the model year, so do buyer incomes. This pattern is consistent with price-insensitive buyers purchasing early in the year, while others wait...

This paper presents evidence that consumers underreact to taxes that are not salient and characterizes the welfare consequences of tax policies when agents make such optimization errors. The empirical evidence is based on two complementary strategies. First, we conducted an experiment at a...

The financial intermediary is shown to result from a market imperfection related to the costly monitoring of the actions of consumers. In such an environment complete insurance is not obtainable and consumers respond by holding some of their wealth as precautionary balances in order to...

Most households persistently invest in riskless assets but not stocks, and may do so because they perceive the information required for market participation to be costly relative to expected benefits. In a CCAPM, increased risk aversion, income risk, and lower resources reduce the information...