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

Portfolio implementation is an essential part of active investment strategies. The trading horizon-the length of time allocated for trade implementation, is an important consideration in portfolio trading. Previous research on optimal trading limits the trading horizon as a fixed value. In this...