Endogenously optimistic beliefs about future house prices can account for the path and standard deviation of house prices in the U.S. housing boom of the 2000s. In a general equilibrium model with incomplete markets and aggregate risk, agents form beliefs about future house prices in response to...

Stock prices aggregate the beliefs of different investors. Using this insight, we estimate the fraction of stock market investors holding survey beliefs. We find that 42% of investors hold beliefs matching those of equity analysts and 25% hold beliefs as observed in individual investor return...

We document a remarkable increase in economic belief polarization - disagreement - regarding the future state of the economy across Europe during the Covid-19 pandemic. We find evidence suggesting that belief polarization may have impeded the implementation of pandemic response measures such as...

We empirically analyze a large sample of firm sales growth expectations. We find that the relationship between forecast errors and lagged revision is non-linear. Forecasters underreact to typical (positive or negative) news about future sales, but overreact to very significant news. To account...

Models of expected returns are typically evaluated using monthly stock returns. However, it is not clear that one-month-ahead expected returns are appropriate for longer-horizon “patient capital” investors. We use gradient boosting machines to create predictive models of expected returns at...

We estimate gender differences in elicited wage expectations among German University students applying for STEM and non-STEM fields. Descriptively, women expect to earn less than men and also have lower expectations about wages of average graduates across different fields. Using a two-step...

In auctions bidders are usually assumed to have rational expectations with regards to their winning probability. However, experimental and empirical evidence suggests that agent's expectations depend on direct utility stemming from expectations, resulting in optimism or pessimism. Optimism...

A longstanding challenge in evaluating the impact of uncertainty on investment is obtaining measures of managers' subjective uncertainty. We address this challenge by using a detailed new survey measure of subjective uncertainty collected by the U.S. Census Bureau for approximately 25,000...

This letter applies Siniscalchi (2009)’s Vector Expected Utility to introduce ambiguity aversion into factor models for assets’ returns. The resulting criterion is tractable and its adjustment for ambiguity vanishes as initial wealth increases. Finally, it can be related to shrinkage...

The theoretical literature on platforms and network effects predicts that the initial growth and takeoff of a platform crucially depends on the market’s expectations of the future installed base. This paper tests this claim, reporting on a field experiment in which invitations to join a newly...