Well, that's quite a loaded question! Trading strategies can vary greatly in profitability depending on market conditions, asset classes, and individual trader preferences. However, one commonly cited strategy that has proven to be profitable over time is trend following. This involves identifying and riding long-term market trends, often using technical indicators and chart patterns to make buy and sell decisions.
Of course, even with this strategy, there are no guarantees of profitability, and traders must still manage risk and stay disciplined in their approach. Additionally, the profitability of any trading strategy can vary greatly depending on the specific asset being traded and the overall market environment.
So, while I can't definitively say that trend following is the most profitable trading strategy of all time, it is certainly one that has stood the test of time and is worth considering for traders who are looking to capitalize on long-term market movements.