The forward unbiasedness regression is revisited by varying the prediction horizons from 1 day to 1 year. The panel data suggests some possibility of a positive slope coefficient at a short horizon while the negative coefficient improves forecasting performance at longer horizons

This paper studies the heterogeneous effects of the COVID-19 outbreak on stock prices in China and its hidden mechanisms from multi perspectives. First, we confirm the recent conclusion that the spread of the epidemic has a significant negative impact on stock market returns. However, this...