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How reliable is backtests?
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RSTrading

Biedrs kopš Jul 16, 2013  385 ieraksti Rihan (RSTrading) Sep 22 2014 at 19:31
How reliable is the MT4's strategy tester with 90% modelling quality?

Live and let live..
CrazyTrader

Biedrs kopš Nov 21, 2011  1706 ieraksti CrazyTrader (CrazyTrader) Sep 22 2014 at 22:46
It depends on what type of strategy you are backtesting.
- Scalping strategy is 100% useless

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RSTrading

Biedrs kopš Jul 16, 2013  385 ieraksti Rihan (RSTrading) Sep 23 2014 at 06:33
Not a scalper..

Live and let live..
Cholipop

Biedrs kopš Aug 07, 2014  406 ieraksti Cholipop Sep 23 2014 at 07:02
CrazyTrader posted:
It depends on what type of strategy you are backtesting.
- Scalping strategy is 100% useless


 Hello. Why would you say scalping strategies and backtesting is 100% useless? Such open ended statements reveals your bias towards BIAS TRADING which is investing. Scalpers make money on both sides of the coin, as investors only look to FOLLOW the trend. We see how well that worked from 1.39xx to 1.30xx on EU huh..

Why guess, when you can react to what is in front of you.
theHand

Biedrs kopš Sep 20, 2014  360 ieraksti theHand Sep 23 2014 at 07:08
It's very unreliable. MT makes up the data as it goes along. You'll get a different result from running a test while online and while offline. You'll get a different result on a different processor.

It's got no use other than to see if your code is working.

RSTrading

Biedrs kopš Jul 16, 2013  385 ieraksti Rihan (RSTrading) Sep 23 2014 at 07:32
Is there any way of doing a reliable backtest then to see how your EA will perform before going live?

Live and let live..
theHand

Biedrs kopš Sep 20, 2014  360 ieraksti theHand Sep 23 2014 at 10:03
Just test it. You can run as many instances of MT as you want to. I usually have about 10 going. If you have an idea code it, run it. See what happens.

Your alternative is to ditch MT and write your own systems in JAVA or C++ and go test it on Oanda's data...

Can also try something ike this: https://pepperstone.com/trading-platforms/ctrader-calgo.php

I don't know how accurate they are, but quite frankly anything will be more accurate than MT.

theHand

Biedrs kopš Sep 20, 2014  360 ieraksti theHand Sep 23 2014 at 10:03
There's no short cuts, fx takes time, money and effort. Lots of time and effort. And money...

adrian8891

Biedrs kopš Jun 03, 2010  696 ieraksti Adrian Matusiak (adrian8891) Sep 23 2014 at 11:17
RSTrading posted:
How reliable is the MT4's strategy tester with 90% modelling quality?


Not reliable even at 1% ;)

PAMM MANAGER // Professional Fund Manager
RSTrading

Biedrs kopš Jul 16, 2013  385 ieraksti Rihan (RSTrading) Sep 23 2014 at 11:49
I suppose you meant 'not even at 100%'?

So does that extra 9% make a huge difference. Should one rather go that route?

I know backtesting doesn't factor in stuff like spread and commission, but lets say you set the spread to a ridiculous figure and know what your commission is per trade, will that do?

What do you guys then do to get accurate backtesting?

Live and let live..
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