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Thanks
Ed but I don't think Andrew got much out of our exchange - just a
feeling..
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The
first thing you need to know when viewing the AB backtest reports is that every
trade is taken without consideration of the capital available. There is no
portfolio management in the backtest so you can't rely on the backtest results
being reliable in terms of portfolio consideratons. Individual Tickers?
Yes.
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There
are some new user supplied tools emerging to help deal with this and TJ has
promised us some exciting (my word not his) enhancements in this area.
(He's been very quiet lately in terms of beta releases and the suspense is
building... Usually when he's quiet like this something big is about to
happen... ) Fred Tonetti has just shared the "Mother of all
backtesters", PT101, and its available in the files section of this
group. Don't try to understand the logic in it 'cause Fred is from New
Jersey!
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As to
your specific questions: I haven't tried to reconcile the numbers as you have
and don't have answers for you - I suggest you forward a copy of your email to
support@xxxxxxxxxxxxx to see if TJ
can help you.
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Re
your last paragraph: as I mentioned above every trade is taken regardless and
increasing the equity will not help.
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<FONT
face=Tahoma size=2>-----Original Message-----From: Edward M.
Wylonis [mailto:ewylonis@xxxxxxxxx] Sent: Saturday, June 07, 2003
10:50 PMTo: amibroker@xxxxxxxxxxxxxxxSubject:
[amibroker] Re: lets try tradingDingo,I
appreciate your helping Andrew to understand backtesting as it could also
help me. I have been trying to understand how it works but have been
stymied by "apparent" inconsistencies. There may be an explanation
for them but I have searched the User Guide and the archives but have not
found explanations. One inconsistency(to me) shows up on Andrew's
results. For instance:The "Total net profit: 14240.39 does not equal
the Profit of winners: 13197.19 minus the Loss of losers: 0.00. Do theses
numbers include commissions?In my backtest the Profit of Winners
less the Loss of losers does add up to the Total net profit, however, the
number of trades does not match the results. The dollars of profit
include all of the trades in the results but the number of trades counted
is less than a manual count. For instance there will be 32 winning
trades and 35 losing trades but only 8 winning trades and 18 losing trades
will be totaled in the results and only 8 and 18 tickers will have a 1 for
a trade in the results listing. Am I missing something?Does
the backtester take the equity and use it on the first trade candidate and
pass on another trade candidate when it appears if all of the
equity/margin is involved in the first trade? When the first trade is sold
does it then become available for another trade? Does that explain
why the number of trades in the results is less than the stocks that met
the buy/sell criteria? Will increasing the equity include some of those
trades?Thanks,Ed--- In
amibroker@xxxxxxxxxxxxxxx, "dingo" <dingo@xxxx> wrote:> The first
thing you've got to do is learn how to read the results in> your
report. How skilled are you at that? I don't want to talk beneath>
your level of experience so how about a little background on your>
trading experience and experience with Amibroker?> >
d> > -----Original Message-----> From: Andrew
[mailto:andok@xxxx] > Sent: Friday, June 06, 2003 10:41 PM> To:
amibroker@xxxxxxxxxxxxxxx> Subject: [amibroker] lets try
trading> > > I have no idea backtest look good .>
> > > > Best regards,>
Andrew
mailto:wocek@xxxx > > Yahoo! Groups
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