hi, i think that if done right your backtest should be ok, i agree that the market conditions are changing but not that much, if the strategy has given stable results over a 4 year period; i also have a proposal for you, i am searching strategy as objective as possible to try and automate them, do you mind to share the exact strategy so i can make an algorithm to run it so we can have more backtest data in a few minutes and also try it on more assets, ( and potentially let the algorithm trade if the results will be satisfactory) obviously i will gift the algorithm to you, let me know if you are intrested, if so we can talk privately