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Re: Tomasz - PositionSize



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Tomasz,

Thanks.

AB is offering "too many" options.... it's great ... and a constant 
learning process

Ara

--- In amibroker@xxxx, "Tomasz Janeczko" <amibroker@xxxx> wrote:
> Ara,
> 
> This is not the point.
> PositionSize allows to specify variable size of position
> (varies from trade to trade).
> 
> For example in the first trade you may invest $25000
> in the second trade $20000 and in the third trade $15000.
> 
> Buy and Hold simulation buys at the very first bar of analysis 
period
> and sells at the last bar of analysis period.
> PositionSize variable at the first bar of analysis period can be
> undefined or set to completely weird value so using it would
> cause big confusion. On the other hand one would use one
> of the position sizes used for trades but the question arises
> which one to choose (highest/lowest/average?).
> There is also 3rd aspect of the whole thing: to keep B&H results
> comparable between themselves the same calculation procedure
> has to be used regardless of formula used.
> After all Buy and Hold strategy should not depend on the formula 
used.
> 
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message ----- 
> From: "akaloustian" <ara1@xxxx>
> To: <amibroker@xxxx>
> Sent: Monday, October 28, 2002 9:48 PM
> Subject: [amibroker] Re: Tomasz - PositionSize
> 
> 
> > Tomasz,
> > 
> > I was under the impression that when PositionSize is specified, 
the 
> > trade will be that amount if funds are available or no trade if 
> > adequate funds are not available. If so, the B&H amount can be 
> > determined.... Does position shrinking work with PositionSize, 
> > complicating the issue?
> > 
> > Is my understanding correct?
> > 
> > Ara
> > 
> > 
> > --- In amibroker@xxxx, "Tomasz Janeczko" <amibroker@xxxx> wrote:
> > > Ara,
> > > 
> > > In B&H calculation all equity is invested regardless of 
position 
> > size variable.
> > > 
> > > Since PositionSize can vary from trade to trade AmiBroker 
> > > is not able to guess what value of PositionSize should be used 
for
> > > B&H. Maximum, minimum, average ?
> > > 
> > > Best regards,
> > > Tomasz Janeczko
> > > amibroker.com
> > > ----- Original Message ----- 
> > > From: "akaloustian" <ara1@xxxx>
> > > To: <amibroker@xxxx>
> > > Sent: Monday, October 28, 2002 4:06 AM
> > > Subject: [amibroker] Tomasz - PositionSize
> > > 
> > > 
> > > > When I testing with PositionSize specified, and compare 
results 
> > > > without positionsize, the results for the strategy change 
> > properly, 
> > > > but the B&H results do not change.
> > > > 
> > > > I beleive the B&H results should be the same for % returns 
but 
> > the 
> > > > absolute $ return should change (assuming total equity and 
> > position 
> > > > size are different)
> > > > 
> > > > Ara 
> > > > 
> > > > 
> > > > 
> > > > Post AmiQuote-related messages ONLY to: amiquote@xxxx 
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> > > > 
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> > > > 
> > > >
> > 
> > 
> > 
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> > 
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> >