Expert advisor

Hilton Chitanda  
So when you test an expert advisor on historical data and it gives good results does that mean it is automatically profitable in real time trading 
Roberto Jacobs  
Hilton Chitanda:
So when you test an expert advisor on historical data and it gives good results does that mean it is automatically profitable in real time trading 

No!

_MAHA_  
Hilton Chitanda #:
Please explain 
You can optimize an ea and choose the best result at end. 
Create a demo account in your broker, and leave the ea auto trading.
Tobias Christian Witzigmann  
Roberto Jacobs #:

No!

Agree 100%. There is much more to do than just a simple backtest.

And I'm not even talking about all the technical stuff like wrong spread, bugs, bad data.... That's the first thing you need to get right. After that, you will most likely fall into the trap of over-optimization.

So no, a good backtest means nothing. Creating a good looking backtest is easy, anyone can do it. Creating a good strategy is much harder.

https://www.mql5.com/en/forum/427978/page2

Why do algorithms stop working? - How to improve your stock-market strategy; The holy grail of a new algo is the holy Grail, but I don�
Why do algorithms stop working? - How to improve your stock-market strategy; The holy grail of a new algo is the holy Grail, but I don�
  • 2022.07.07
  • www.mql5.com
The consequence is that most strategies sold on the internet are just not working. If you think in terms of weekly periods then you are probably scalping or do you have strategies that make over 100 trades per week
Reason: