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[amibroker] Re: BackTest Question



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Tony,

Again thanks, and I agree witbh what you say in trading stocks or fx 
etc - but in Australia and the UK the use of guaranteed stops trading 
CFD's removes this problem.

Geoff

--- In amibroker@xxxxxxxxxxxxxxx, "aewenos" <awenos@xxxx> wrote:
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Geoff Mulhall" 
<geoffmulhall@xxxx> 
> wrote:
> . 
> > 
> > As soon as a position has its trailing stop above the buy price 
there 
> > is no more risk with that position 
> 
> 
> Geoff,
> 
> You might want to rethink this as risk can never be eliminated, it 
can
> only be managed.  Think about gap down openings and the effect on 
an 
> individual position.  
> 
> There can also be news driven gap downs during the day and you'd 
never 
> see this on EOD data and it would  never be reflected in any 
backtests 
> using EOD.
> 
> Also, think about having your system reach Max DD in actual trading.
> You are not past the worst of it by any means.  There is no reason 
why
> a Max DD occurance can not be followed, in short order, by another
> period eqivilant to a Max DD.
> 
> Keep in mind that a MaxDD event happens only once in any backtest.
> However, there will be multiple interim DD's and a series of these 
can
> shred an account just as much, or more, than a MaxDD.
> 
> Of course, this all does not touch on the probability of somethind 
> happening.  My point is only to point out that the rusk is alway 
there
> and it is always larger than one would care to think about.
> 
> Regards,
> 
> Tony
>






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