This study examines how changes in the information environment affect the informational advantage of geographically proximate agents. We find that the long-term advantage of local agents disappeared at the turn of the millennium. This is accompanied by the reduction in local bias of...

This study examines whether momentum in stock prices is induced by changes in the political environment. We find that momentum profits are concentrated among politically sensitive firms and industries. During the 1939 to 2016 period, a trading strategy with a long position in winner portfolios...

We study information externalities of industry “star firms” (Gutiérrez and Philippon, 2019). Our results indicate that earnings shocks to star firms contain useful information about the future earnings surprises and job postings of other same-industry nonstar firms. This information is not...

Using machine learning methods, we develop a new measure of aggregate analyst sentiment. We first train analyst-specific neural network (NN) models that capture each analyst's common biases across firms. Using NN model outputs, we decompose the forecast errors of individual analysts into...

We show that the personal traits of analysts, as revealed by their political donations, influence their forecasting behavior and stock prices. Analysts who contribute primarily to the Republican Party adopt a more conservative forecasting style. Their earnings forecast revisions are less likely...

Using Internet search volume for lottery to capture gambling sentiment shifts, we show that when the overall gambling sentiment is high, investor demand for lottery-like stocks increases, these stocks earn positive short-run abnormal returns, managers are more likely to announce stock splits to...

This study shows that weather-based indicators of mood impact perceptions of mispricing and trading decisions of institutional investors. Using survey and disaggregated trade data, we show that relatively cloudier days increase perceived overpricing in individual stocks and the Dow Jones...

This study examines whether diversity among market participants is associated with diverse information environments and better aggregation of information. Using measures of diversity among sell-side equity analysts, we demonstrate that although minority analyst forecasts are less accurate, their...