@ross_rfx: Jim Simons never guessed. His Medallion fund averaged 66% a year before fees from 1988 to 2018, run on maths models built by mathematicians. You can copy the habit: write the rule, test it on data it never saw, follow it when it hurts. Comment NEBULA and we'll send you the free download. Not affiliated with or endorsed by Jim Simons or Renaissance Technologies. #quanttrading #algotrading #backtesting #systematictrading #mt5 Education only, not advice. Leveraged FX/CFD trading is high risk and most retail traders lose money.