The "quant crisis" of 2007 and subsequent unfolding of the global financial crisis highlighted the importance of the "crowded-trade" problem (not being able to know how many others are taking the same position). To investigate the crowded trading, we present a model in which informed and...

Given that corporate managers use stock prices as signals when making investment decisions, does market manipulation distort this process and impact corporate investment? We find that the increased prevalence of stock price manipulation has an economically meaningful negative effect on firms’...

We find that approximately 30% of financial advisers in the United States are involved in misconduct, yet only about one-third of those are detected. Advisers involved in misconduct tend to be male, work in a "toxic" environment, change firms more often, pass fewer industry exams, and have less...

Markets often experience liquidity deteriorations during financial crisis and improvements during reforms in trading rules. To explain these phenomena, we present a price formation model in which market makers are subject to ambiguity. When the market maker is sufficiently ambiguity averse, the...