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KJ Trading Systems Kevin Davey - Ask Me Anything (AMA)
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KJ Trading Systems Kevin Davey - Ask Me Anything (AMA)

  #141 (permalink)
Every Day I'm a n00b
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kevinkdog View Post
I have never done any research. I test it like any other day.

If you knew exact dates and times of all historical scheduled announcements, etc, you could trade just those days or exclude just those days if you cared to. A lot of work to do it though...

That's why I didn't do it yet lol.

I'll dig and see what I can find.

Jimmy

-Jimmy
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  #142 (permalink)
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I would like to put a simple question, something that concerns me but it's probably quite simple and common on the day to day of sistematic trading, I suspect.

I've been designing a bunch of strategies. Most of them are real rubish from the very beginning, others don't support a quick backtest though looking good on its preliminary results, others come together with extremes drawdawn though beeing profitable most of the time (too risky for me). BUT I have a couple of them that give me good results, and I mean with good results: Good ratios: Maximum Drawdawn (Ok), Profit factor (Ok), return/DD (Ok), Walf Fordward Eff. (Ok). Great! Holy Grail! Eureka!

My concern is that those promising results are only presents for a single index. On other markets like FX, Commodities, even other indexes they simply and clearly fail no matter the parameters I use. So, what do you do with those strategies? Go ahead on that single market or just discard them because of lack of robustness?

I have the feeling to discard them despite all the sweat, blood and tears invested. I don't trust them if they just pass the exam in one index. But on that single market they are outstanding! Right now I'm passing and continue with more ideas, trying to cold down my mind and come back to those strategies later...

I'll appreciate your wise comments

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  #143 (permalink)
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Enric66 View Post
I would like to put a simple question, something that concerns me but it's probably quite simple and common on the day to day of sistematic trading, I suspect.

I've been designing a bunch of strategies. Most of them are real rubish from the very beginning, others don't support a quick backtest though looking good on its preliminary results, others come together with extremes drawdawn though beeing profitable most of the time (too risky for me). BUT I have a couple of them that give me good results, and I mean with good results: Good ratios: Maximum Drawdawn (Ok), Profit factor (Ok), return/DD (Ok), Walf Fordward Eff. (Ok). Great! Holy Grail! Eureka!

My concern is that those promising results are only presents for a single index. On other markets like FX, Commodities, even other indexes they simply and clearly fail no matter the parameters I use. So, what do you do with those strategies? Go ahead on that single market or just discard them because of lack of robustness?

I have the feeling to discard them despite all the sweat, blood and tears invested. I don't trust them if they just pass the exam in one index. But on that single market they are outstanding! Right now I'm passing and continue with more ideas, trying to cold down my mind and come back to those strategies later...

I'll appreciate your wise comments


If you don't trust them, don't trade them.

You have the opinion that a strategy must work in multiple markets to be considered "robust." Maybe you should ask yourself why that has to be true. Why does a strategy that works on the ES also have to work on the Euro currency? Or, does an ES strategy have to work on the TF or NQ - and if so, how good does it have to be?

Examine your mindset about this requirement you have - that a strategy should work on multiple markets to be robust. I'm not saying it is right or wrong. And as long as you are satisfied your requirements are based on sound logic, then definitely throw away strategies that don't meet your requirements.

I hope this helps!

If you have any questions please send me a Private Message or use the futures.io "Ask Me Anything" thread
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  #144 (permalink)
Every Day I'm a n00b
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Here's something I found in my own results - I have a system that trades the US markets well, all except one.

It performs well in ES, YM, ZB, ZN. I apply any iteration of it to NQ, and it is erratic and flat. It doesn't lose, but, it doesn't win either lol.

-Jimmy
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  #145 (permalink)
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Enric66 View Post
I would like to put a simple question, something that concerns me but it's probably quite simple and common on the day to day of sistematic trading, I suspect.

I've been designing a bunch of strategies. Most of them are real rubish from the very beginning, others don't support a quick backtest though looking good on its preliminary results, others come together with extremes drawdawn though beeing profitable most of the time (too risky for me). BUT I have a couple of them that give me good results, and I mean with good results: Good ratios: Maximum Drawdawn (Ok), Profit factor (Ok), return/DD (Ok), Walf Fordward Eff. (Ok). Great! Holy Grail! Eureka!

My concern is that those promising results are only presents for a single index. On other markets like FX, Commodities, even other indexes they simply and clearly fail no matter the parameters I use. So, what do you do with those strategies? Go ahead on that single market or just discard them because of lack of robustness?

I have the feeling to discard them despite all the sweat, blood and tears invested. I don't trust them if they just pass the exam in one index. But on that single market they are outstanding! Right now I'm passing and continue with more ideas, trying to cold down my mind and come back to those strategies later...

I'll appreciate your wise comments

Sorry for stepping in with my opinion in Kevin's AMA, but if a strategy fails to perform similarly on a highly correlated instrument, then it's a sure sign of curve fitting and you shouldn't trade it.

Mike

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  #146 (permalink)
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FABRICATORX View Post
Here's something I found in my own results - I have a system that trades the US markets well, all except one.

It performs well in ES, YM, ZB, ZN. I apply any iteration of it to NQ, and it is erratic and flat. It doesn't lose, but, it doesn't win either lol.

NQ is a very tough market to develop a strategy for. I thought it was just for me, but quite a few traders better than me have said the same thing...

If you have any questions please send me a Private Message or use the futures.io "Ask Me Anything" thread
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  #147 (permalink)
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Big Mike View Post
Sorry for stepping in with my opinion in Kevin's AMA, but if a strategy fails to perform similarly on a highly correlated instrument, then it's a sure sign of curve fitting and you shouldn't trade it.

Mike

well maybe true in many cases but I disagree on that if it is inteded as a matter of fact. ES and YM are highly correlated markets(just to make an example that fit) but that doesn't mean that a strategy that works well on ES works the same way on YM, yes it should, in many cases it does, but it's not an if-then equation tu run or not a strategy, in my opinion.

My opinion instead is that there are very few strategies that are worth trading their own and I still didn't find any. But there may be a lot of average strategies that put into a portfolio could give you a quite stable performance. So the goal should be building a portfolio and make it grow, not working to find the best and robust strategy that will make you money forever(I know we all agree on it, but worth repeating)

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  #148 (permalink)
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Big Mike View Post
if a strategy fails to perform similarly on a highly correlated instrument, then it's a sure sign of curve fitting and you shouldn't trade it.

Mike

If you make the excercice to curve fitting a graph wouldn't you indirectly curve fit its highly correlated as well?


kevinkdog View Post
If you don't trust them, don't trade them.

Bought it!


kevinkdog View Post
You have the opinion that a strategy must work in multiple markets to be considered "robust." Maybe you should ask yourself why that has to be true. Why does a strategy that works on the ES also have to work on the Euro currency? Or, does an ES strategy have to work on the TF or NQ - and if so, how good does it have to be?

Examine your mindset about this requirement you have - that a strategy should work on multiple markets to be robust.

I didn't expect high performance on all markets for a single strategy. But I'm shocked at seeing a very good result on a single one and miserable results on another ones. I would have liked to see good results on one and at worst flat results on the others. Why do I have this paradigm? Well probably I've read too many times about this concept of robustness. Anyway if it weren't true which would be the sense of using CCI out of Commodities, or MAs everywhere, etc?

I hope my comments don't exceed your patience. But if I may, let me put my question in other way: For a mechanical trader all the rules to define a strategy are absolutely accurate, no exceptions. Once the strategy is 'manufactured' there's a mechanical process to test it and this last process should have its accurate rules. Here's the question. On these rules do you consider the results in just one market or do you expect some minimum for other markets as well?

Well, again thanks!

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  #149 (permalink)
Market Wizard
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FABRICATORX View Post
Here's something I found in my own results - I have a system that trades the US markets well, all except one.

It performs well in ES, YM, ZB, ZN. I apply any iteration of it to NQ, and it is erratic and flat. It doesn't lose, but, it doesn't win either lol.

If you rank those products in volatility order isn't NQ significantly more volatile than the others?

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  #150 (permalink)
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You know what, I have no idea lol. Is it?

Jimmy

-Jimmy
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