We investigate the use of machine learning (ML) and other robust-estimation techniques in event studies conducted on single securities for the purpose of securities litigation. Single-firm event studies are widely used in civil litigation, with billions of dollars in settlements hinging on the...

I have divided this testimony into four sections, which discuss: (1) several types of automation currently being deployed in capital markets and the financial sector, and how they affect decision-making; (2) how machine learning (ML) and automation can help and hurt workers by disruption of the...

"This book introduces the readers to the rapidly growing literature and latest results on financial, fundamental and seasonal anomalies, stock selection modeling and portfolio management. Fifty years ago, finance professors taught the Efficient Markets Hypothesis which states that the average...

Financial econometrics is a great success story in economics. Econometrics uses data and statistical inference methods, together with structural and descriptive modeling, to address rigorous economic problems. Its development within the world of finance is quite recent and has been paralleled by...

"This book introduces the readers to the rapidly growing literature and latest results on financial, fundamental and seasonal anomalies, stock selection modeling and portfolio management. Fifty years ago, finance professors taught the Efficient Markets Hypothesis which states that the average...

We examine the spillover effects of the Global Analyst Research Settlement (or Global Settlement) on analysts' earnings forecasts in 40 developed and emerging markets. Prior to the Global Settlement, analysts generally made overly optimistic forecasts, this bias tending to be higher in countries...

This paper examines whether and how U.S. analysts contribute to an improvement in the home market information environment of foreign firms cross-listed in the United States. Comparing return and trading volume reactions to U.S. analyst recommendation revisions to local analysts' for cross-listed...

Rationality would suggest that advice-seeking investors receive benefits from costly financial advice. However, evidence documenting these benefits for U.S. investors has so far been lacking. This paper is the first to document that U.S. mutual fund investors indeed receive one of the many...