Why do you think they are in contradiction ? SQN also includes a standard deviation consideration so a high win rate will implicitly be favored => under the constraint of an optimal average size
You know what you know but you do not know what you do not know.
You do not see things how they are, you see things how you are.
In life you do what you want but you do not want what you want.
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Being a foreigner I have a hard time to understand all those abbreviations, no idea what you mean with SQN.
Van Tharp teaches his students to look for larger R-Multiples. This points to a lower percentage of winning trades. This also increases the probability of larger drawdowns, if you compare this to an alternating approach that achieves the same expectancy with a higher win rate but lower R-Multiples.
As the number of contracts that you can trade is related to the max. expected drawdown, you may trade a higher number of contracts for the same risk of ruin.
There are several reasons that Van Tharp recommends to trade high R-multiples
(a) The R-Multiple is known for each trade setup, the win rate is unknown.
(b) Letting your profits run is counterintuitive. With a defined R-Multiple you can monitor your impulse to close out your winning trades too early.
(c) An unfavourable R-Multiple allows you to skip a trade.
This is valid for discretionary trading. If I was a systems trader, I would look for strategies with a win rate as high as possible, taking into account a low R-Multiple. This would allow me to trade size for the same risk.
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SQN = System quality Number = Average Profit per trade * SquareRoot(NumberTrades)/Standard Deviation of Profit per trade
"let your profits run" worked before when a strategy was not backtestable , now that we have this very powerful tool there is no sense anymore to trade without knowing exactly what happened in the past .... not that th situation will repat itself, but I am convinced that knowing the odds is a great statistical edge ...
You know what you know but you do not know what you do not know.
You do not see things how they are, you see things how you are.
In life you do what you want but you do not want what you want.
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Here is where I left off on this project (attached). Needs some work, I've just had zero time lately to do it. Lots of calculations so it takes a second to open.
thanks for the great journal template. Though I could'nt resist fiddling around with it a bit.
I hope you don't mind, otherwise I will delete the attachment of course.
It now calculates up to three exits (calc based on one contract each, could be easily changed though). Big Mike, thought you might like this!
All user input fields/columns are marked green.
Added some psychologically interesting stats (light blue fields in overview).
Added column for comments (no drop down list).
Simplified rules column (now only two options, whether trade worked or not is calculated automatically).
Would be possible to refine that (grading) if anyone needs it I'll be happy to do that. Expectancy calculation seemed to have a sign error (please double check whether it is corrected now (might be that I am wrong here)).
Protected sheets so that no formula gets changed by mistake (no password).
v
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