We study fake news in financial markets using a novel dataset from an undercover SEC investigation. Our setting measures both the direct and indirect effects of market manipulation. Fake articles directly induce abnormal trading activity and increase price volatility, but in addition, the...

We study the relationship between economic activity, modeled by a minimum-effort coordination game, and asset markets in which securities' values correspond to outcomes of the activity. We explore both theoretically and experimentally how final prices and asset holdings in the market influence...

We design an experiment to understand how social preferences affect investment decisions through stock allocations and probability assessments. The major preference channel is asymmetric in social outcomes - although negative and positive responsible investment (RI) externalities have the same...

Beliefs about collective outcomes, such as economic growth or firm profitability, play an important role in many contexts. We study biases in the formation of such beliefs. Specifically, we explore whether over-optimism and self-serving biases in information processing— documented for beliefs...

The paper studies institutional trading ahead of scheduled information releases, notably earnings announcements. While scheduled news are known to be preceded by sizeable stock returns, we find that institutional investors on average forego part of these premia as they decrease their exposure to...

Beliefs about collective outcomes, such as economic growth or firm profitability, play an important role in many contexts. We study biases in the formation of such beliefs. Specifically, we explore whether over-optimism and self-serving biases in information processing—documented for beliefs...

In this paper we identify a unique series of recurring stale information releases and show that the aggregate markets respond to its release. The macroeconomic series -- the U.S. Index of Leading Economic Indicators (LEI) -- is released monthly and constructed as a summary statistic of...

This article studies the causal effect of individuals' overconfidence and bounded rationality on information aggregation by using a new multiperiod game in which agents are rewarded for submitting accurate estimates of an unknown asset's value based on (i) their private information and (ii)...

We explore both theoretically and experimentally how final prices and security holdings in an asset market influence and forecast behavior and outcomes in an affiliated coordination game. We vary the incentives from the market relative to payoffs from the game, the number of players in a group,...