The authors find predictable patterns in stock returns. Stocks whose relative returns are high in a given half hour today exhibit similar outperformance in the same half hour on subsequent days. The effect is stronger at both the beginning and the end of the trading day. These results suggest...

This paper introduces a media-coverage-based approach to quantify narratives and develops methodologies to explain the extent to which narratives drive financial markets and returns of investment portfolios. We show that media-derived narratives may contain predictive information for market...