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[amibroker] Re: System Performances



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Just keep in mind that a 3% stop loss does not necessarily limit 
losses to 3% ... 

--- In amibroker@xxxxxxxxxxxxxxx, "intermilan04" <intermilan04@xxx> 
wrote:
>
> Phsst,
> 
> I don't like the trade drawdown more than the system drawdown.  I 
used
> to think that having a large trade drawdown was OK as long as the
> system drawdown was small, and I think I was wrong.
> 
> As a daytrader I take and close out positions daily.  Imagine having
> lost 7% on a single trade and having to close out the position at 
the
> end of the day...you just registered a huge loss.  You are left with
> negative emotion, frustrated because of the lost money.  You start 
to
> worry about your trading capability and such.  I know it's
> psychological stuff but quite important one IMO.
> 
> So, as I mentioned earlier I limit my loss at 3%, no matter what.  
For
> whatever reason or for no reason, if stock moves 3% against me, I 
get
> out.  I'd rather not lose 3%, but settling for a 3% loss is 
certainly
> better than not having a stop and have a potential to lose big.
> 
> --- In amibroker@xxxxxxxxxxxxxxx, "Phsst" <phsst@> wrote:
> >
> > Fred's point is accurate IMO....
> > 
> > If the Trader has spent blood, sweat and tears over a period of 
years
> > building up a serious trading equity, then a 28% System Drawdown 
would
> > be demoralizing (only after causing a serious case of "Butt 
Pucker").
> > 
> > A subsequent post from Ed showed a 'Max Sys DD = -3.6%', but only
> > included 48 trades... which because of the small number of trades
> > seemed to me to be statistically irrelevant.
> > 
> > 
> > --- In amibroker@xxxxxxxxxxxxxxx, "Fred" <ftonetti@> wrote:
> > >
> > > A Comment and a suggestion ... 
> > > 
> > > - DrawDowns ... I could be wrong but I suspect most people 
can't 
> > > tolerate 28% DD's ... To bring that number down to the point 
where 
> > > at least some people would be comfortable with it using real 
money 
> > > one would I think have to cut it half.  Doing that with an 
existing 
> > > system by restricting how invested one is will result in the 
CAR 
> > > being reduced to the square root of its original number.
> > > 
> > > - Objective Testing ... Take your data, cut in half ... 
Optimize 
> > > your system over half of the data and then test the parameter 
values 
> > > on the other half.  This rudimentary view of out of sample 
testing 
> > > will give you some idea of what you are likely to experience in 
real 
> > > trading as opposed to totally in sample results.
> > > 
> > > --- In amibroker@xxxxxxxxxxxxxxx, "intermilan04" 
<intermilan04@> 
> > > wrote:
> > > >
> > > > Since I have optimized my system between 1996-2006, I guess 
the 
> > > > answer would be the same time period.
> > > > 
> > > > --- In amibroker@xxxxxxxxxxxxxxx, "Fred" <ftonetti@> wrote:
> > > > >
> > > > > That doesn't answer my question ...
> > > > > 
> > > > > In the development of the system what range of data ( time 
> > > period ) 
> > > > > did you use ?  The same time period ? An earlier one ?
> > > > > 
> > > > > --- In amibroker@xxxxxxxxxxxxxxx, "intermilan04" 
<intermilan04@> 
> > > > > wrote:
> > > > > >
> > > > > > The numbers are the result of backtesting my system with
> > > > > > NASDAQ and NYSE tickers (around 7000 tickers) between
> > > > > > 1996/1/1~2006/1/1.
> > > > > > 
> > > > > > --- In amibroker@xxxxxxxxxxxxxxx, "Fred" <ftonetti@> 
wrote:
> > > > > > >
> > > > > > > Are the numbers you posted in sample or out of sample ?
> > > > > > > 
> > > > > > > --- In amibroker@xxxxxxxxxxxxxxx, "intermilan04" 
> > > <intermilan04@> 
> > > > > > > wrote:
> > > > > > > >
> > > > > > > > I know it depends on what you want personally for 
> > > risk/reward, 
> > > > > but 
> > > > > > > I'm
> > > > > > > > curious as to what other people's systems (developed 
in 
> > > > > Amibroker) 
> > > > > > > are
> > > > > > > > performing like. You don't have to share your code or 
the 
> > > idea 
> > > > > behind
> > > > > > > > your system (unless you want to), but I'm curious.
> > > > > > > > 
> > > > > > > > Over the last 10 years, say, what is your annual 
profit %, 
> > > max
> > > > > > > > drawdown, % winning trades, etc.?
> > > > > > > > 
> > > > > > > > I have a long system that has returned around 110% 
since 
> > > > > 1996.  Its
> > > > > > > > winning % is 47%, and the system drawdown is 28%.  It 
is a
> > > > > > > > reversal-based, swing-daytrade system.
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>







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