Mechanical systems a route to the poor house.

Quote from Bearbelly:

After watching the minis for a couple of years I think most of the time the moves are too random to use a system on. The only time I find any predictable moves are when you get a large move and trade the pullbacks but it is very hard to wait around for those days.

if they are random you can neither trade them discretionarily or mechanically.
 
Part of the desire for a mechanical system is to avoid what the mechanical player sees as an otherwise unproductive emotional confrontation with the market.

I never invested any time in backtesting. Anything that produces drawdowns is a less efficient means of taking money from the market. It is self evident that backtesting and a mechanical solution is either unworkable or not sufficiently attractive.

In problem solving (eg YM intraday), you do not start with a preconceived answer such as a mechanical system. Prices are not random; they are pattern repetitive. But the usual OHLC basis is a wholly insufficient data input for backtesting.

Because people arrive at an opportunity with a skill set or a particular fetish (ie computer science or whatever) this is what they insist on applying. Problem solving (ie how to take money from the market) is finding the 'How'; it is not arriving with a 'How' when you then try & make it fit.
:)
 
Quote from traderNik:

If you were asking me, let me first quote something you wrote earlier in this thread.

"Thus, most successful traders are "discretionary" when it comes to the implementation of their mostly mechanical or rule-based trading......BUT, the performance of such traders cannot be objectively verified, and hence, there is always the possibility that even highly successful traders with years of track record are a result of RANDOMNESS..."

I am not sure how to understand the phrase '100% rule-based'. I suppose it is... decisions are made according to certain rules I have about my trading which pertain to diversification and risk management, rules which are not part of the computer code through which I run the variables I am interested in. I don't want my trades to be too highly correlated and I want to make sure my risk management rules are being followed.

I am not sure why you say that the performance traders who use a discretionary implementation of their 'mostly mechanical or rule-based' strategies cannot be verified. Why can't it? If a trader shows positive returns for a period of 15 years, what standard deviation is that at? It is highly academic to say that you could never show that their performance wasn't random. At least it seems that way to me. Maybe I'm not understanding what you are saying here.

OK. It's clear now that you have clear rules even on risk management decisions, which sit on top of the trading signals part of the plan.

Yes, your remarks regarding verifiability is consistent with what I had in mind. Hence, I said the longer the track record, the less likely the profitability is the result of randomness.
 
Mechanical system signals further thrown into the mental decision process can work if the stops in place are small and profit targets are good like 5 to 8 points or more. You can have 80% loser trades for each 1 point stop and one winner will still put you ahead, not including the slippage etc. ofcourse.

Folks look for high percent winner systems but it is the money/position management which actually puts them ahead of the game.

I believe placing 'smart and disciplined stops' are the key to avoid blowing up your account much earlier than expected.:D
 
I must say that i am a real believer of system trading. of course you must know how to create your algorithm with your own unique rule sets. otherwise you are just wasting you time and money.
 
Quote from scalper21:

Have any of you tried mechanically trading the spreads? ES - ER2 .... ES - NQ ....... ER2 - EMD

I trade ER2 outright. I watch the action in ES closely. It seems to me there is money to be made trading the Index spreads.

On trendless days I have been known to trade an es-nq spread. Sell the weaker, buy the stronger, with profit targets.

Is it successful? Sometimes yes, sometimes no.
 
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