We consider whether traders are more likely to commit securities violations when trading at home, a new form of working induced by the Covid pandemic. We examine data pre- and post-Covid, during which some traders were unexpectedly forced to work at home. The data indicate the presence of both a...

Despite continued attempts by regulators to curtail abusive short sales and increase transparency, the pattern and practice of fraudulent manipulation continues to proliferate and threaten the capitalization of a wide variety of issuers within the securities market. Identifying a meaningful...

This study empirically investigates the profitability of one of the most widely used trade-based manipulation tools, namely the wash trading. Using a unique account level dataset over the 2003-2006 period from the Istanbul Stock Exchange (ISE), we generate a measure for usage of wash sales for...

We provide new compelling evidence that hedge funds possess investment skill. Using the longest-in-literature unbiased sample of hedge funds, we show that large holdings of past winners earn 7% annual benchmark-adjusted return. This remarkable performance is consistent with the notion that large...

The use of computers to execute trades, often with very low latency, has increased over time, resulting in a variety of computer algorithms executing electronically targeted trading strategies at high speed. We describe the evolution of increasingly fast automated trading over the past decade...

We use the introduction and subsequent removal of the flash order functionality from NASDAQ as a natural experiment to investigate the impact of voluntary disclosure of trading intent on market quality. We find that flash orders significantly improve liquidity in NASDAQ. Furthermore, overall...

We analyze how speculative financial innovation affects stock prices, risk premiums, market liquidity, and investor welfare in an economy with heterogeneous beliefs. When investors disagree about the covariance of the newly introduced stocks with the original stocks, we show that financial...