What Forecast Directional Accuracy is needed for a model to be profitable?
This depends on factors such as volatility, transaction costs and other Trading System parameters. In general, it should at least be above 50%. Then the forecasted direction of price change per bar is more often right than wrong. With the Statistical Simulation data series it is possible to project the potential returns based on expected values for FDA, FDS, volatility, transaction cost and other Trading System parameters. See the Users Guide sections about Statistical Simulations for more information about this.