Quote from oilfxpro:
I did thousands of back tests on day trading systems , not one back test showed profitability over 10 years.
The only systems that worked profitably , were on longer time frames with stops between 45 to 100 pips , and on targets of 100 to 250 pips.
Just for the record.
You've already stated you had a profitable automated day trading and automated swing trading system.
Quote from oilfxpro:
I designed and operate 44 automated day and swing strategies , they worked fine for the period 2001 to 2008.In 2009 to 2011 the systems work , but with much lower returns , due to extremely huge amount of fakes, bad news and much more uncertainty in the markets...
Thus, your latest commentary is very confusing to me considering your comments seems to move from one system to another without clarification sometimes about if you're talking about automation or discretionary (sometimes you use the word manual instead of discretionary).
My guess is that your profitable automated day trading methods involve a particular market and then there's other stuff you tested that doesn't show profitability beyond 10 years involving a different market.
That's very common for some methods to be profitable in one type of market and not profitable in a different type of market. I say this only because there are some traders using a method on different markets at the same time...having trading days, months or years showing profits in one market while not profitable in another market.
In fact, there was a journal here at ET many years ago where someone was trading I think the DAX, CL and 6E or something like that and he was only profitable in one specific market while not profitable in the other two markets.
Regardless...please
clarify your comments considering you've already stated you have a profitable automated day trading method as if you're saying you're the only one with a profitable method whereas every body else (the methods you've tested) are not profitable. Also, I'm sure you realize that most profitable discretionary traders normally adapt their methods to market conditions that's always changing. The markets is ALWAYS changing.
This particular insight can not be duplicated in backtesting without hindsight. This reason amongst other reasons is why backtesting or backtesters prefer to "test the method" instead of testing how the trader is "applying the method" concerning discretionary trading.
For example, a discretionary trader may make an adjustment in his/her position size, capital amounts, amount of time trading, switching trading instruments, changing trade management after entry when market conditions change. These are the discretionary elements that a backtester is not able to duplicate in the "testing theory".
Further, your own discovery with that
prior list you posted is an excellent example
(proof) that there are other variables involved besides an entry signal that are just as important in determining if a trade method will produce profits or losses. Many of those variables, especially the ones I highlighted as very problematic, are associated with the trader and not the method.
Those other variables that you mentioned is something a backtester cannot input into the "testing theory". Thus, as stated, a backtester will test the method and
not test how a trader is applying the method.
Mark