This paper examines the efficacy of post-trade transparency regulations like TRACE in over-the-counter (OTC) markets. It is a widely held belief that greater transparency in the trading process benefits investors by reducing opportunities for their exploitation, but I show that this need not be...

Despite the availability of low-cost exchanges, over-the-counter (OTC) trading is pervasive for most assets. We explain the prevalence of OTC trading using a model of adverse selection, in which informed and uninformed investors choose to trade over-the-counter or on an exchange. OTC dealers'...

Despite the availability of low-cost exchanges, over-the-counter (OTC) trading is pervasive for most assets. We explain the prevalence of OTC trading using a model of adverse selection, in which informed and uninformed investors choose to trade over-the-counter or on an exchange. OTC dealers'...

Investors' Exchange LLC (IEX) is a newly approved public exchange that is designed to discourage aggressive high-frequency trading. We explain how IEX differs from traditional continuous double auction markets and present summary data on IEX transactions by trader class and or- der type. Our...

We analyze non-fundamental asset price deviations and their evolutions, and propose a rational, information-based explanation to them when traders are exposed to forced-trades (e.g. fire-sales, fire-purchases). The first objective of this study is to provide a generalized, information-based...

From 1992 to 2011, average R2 increased from 0.17 to 0.47. During this period, passive financial institutions also grew their ownership from 30 to 50% of the market. Passive investors do not perform fundamental research nor trade around firm-specific news, thus reducing the firm-specific...

We propose a continuous-time model of trading with heterogeneous beliefs. Risk-neutral agents face quadratic costs-of-carry on positions and thus their marginal valuations decrease with the size of their position, as it would be the case for risk-averse agents. In the equilibrium models of...

When brokers, analysts and fund managers buy or sell for their own account, they outperform retail investors over short windows up to a month. They earn particularly high abnormal returns when they trade simultaneously with other financial experts and when they trade before earnings...

We study options market participants’ trading behavior before and after the options multiplier increases. After the options multiplier increases, the options market becomes more efficient. By analyzing the high-frequency microstructure dataset, we show that local retail and local institutional...

We identify a new mechanism of opportunistic insider trading that is associated with attention-driven mispricing. Insiders are more likely to sell their company’s stock after increases in retail attention, and they are more likely to buy after attention decreases. A long-short insider-trading...