For years, the SEC accidentally distributed securities disclosures to some investors before the public. This setting is unique because the delay until public disclosure was exogenous and the private information window was well-defi ned, which we exploit to study informed trading with a random...

This paper extends the classic two-armed bandit problem to a many-agent setting in which I players each face the same experimentation problem. The main change from the single- agent problem is that an agent can now learn from the current experimentation of other agents. Information is therefore...

Although fake online customer reviews have become prevalent on platforms such as Amazon, Google, and Facebook, little is known about how these reviews influence consumer behavior. This paper provides the first experimental estimates of the effects of fake reviews on individual demand and...