We find that people revise their beliefs about climate change upward when experiencing warmer than usual temperatures in their area. Using international data, we show that attention to climate change, as proxied by Google search volume, increases when the local temperature is abnormally high. In...

In this paper, I develop a measure of the difference in the amount of information that investors expect a forthcoming disclosure to contain should it reveal good news versus bad news (the disclosure's "asymmetry"). I derive this measure from a model of option prices leading up to an asymmetric...

We analyze the extent to which investors in opaque markets price information from more transparent markets. Exploiting the natural experiment created by bond-insurer insolvency, we show that municipal bond investors ignore insurers' equity prices and CDS premia, yet react to insurers'...

We study an economy with incomplete information in which two agents are uncertain and disagree about the length of business cycles. That is, the agents do not question whether the economy is growing or not, but instead continuously estimate how long economic cycles will last — i.e., they learn...

The wisdom of crowds suggests that groups reach more informed decisions when its members are more diversely informed because, collectively, they have more information which complements the group's assessments and decisions. I examine whether the response to earnings news is more complete and...

We study information acquisition in dealer markets. We first identify a one-sided strategic complementarity in information acquisition: the more informed traders are, the larger market makers' gain from becoming informed. When quotes are observable, this effect in turn induces a strategic...

We study a natural experiment in which 1.5 million investors participate in allocation lotteries for Indian IPO stocks. Investors who win the lottery and obtain IPO stocks that rise in value increase portfolio trading volume in non-IPO stocks relative to lottery losers; the effects are negative...

Periods of technological revolution are usually associated with overvaluation of and over-investment by innovating firms. This paper develops a model that explains this behavior in a frictionless rational setting. When fully rational innovating firms face uncertainty about the returns to scale...

For US investors, international equity exposure has never been so readily available at such a low cost. Nonetheless, surveys indicate US investors typically allocate 80–85% of their equity holdings to US equities, much higher than their proportion of global market value. In this note we...

We propose a model to study firm relationships that endogenously determine the correlation structure of asset cash flows. Forming a relationship makes firms face the following trade-off in their valuations: On the one hand, collaboration generates an additional payoff component with a positive...