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David,
When I got fairly good results from the BackTest of your final
version of "Weekly Portfolio Re-Balancing" I was keen to employ the
script in real-life; i.e. for it to recommend which funds to switch
to each Friday before the close (as a reminder, I am using it with a
fund family, in which I hold 2 funds at one time). As
EnableRotationalTrading works for Backtester only, I assumed that
running the script in Backtester on a Friday would give me the
recommended funds that day. But instead, it ignored the end of week
signal that it should have received on a Friday, and continued to
hold the funds from the previous Friday. The signal was also ignored
on Saturday and the following Monday!
Presumably, therefore, Backtester cannot be used to 'scan', and as
EnableRotationalTrading works for Backtester only, a completely
different script is required to 'select' the top (using
PositionScore) funds on a Friday. Do you have a working 'Scan' script
which performs the "Weekly Portfolio Re-Balancing" strategy?
Thanks,
David
--- In amibroker@xxxxxxxxxxxxxxx, "dweilmuenster95125"
<dweilmuenster95125@xxxx> wrote:
> Hi, yes, someone tipped me to an approach which goes like this
> (omitting extraneous details):
>
> EnableRotationalTrading();
>
> weekend = DayOfWeek()>Ref(DayOfWeek(),1);
>
> PositionScore = IIf(weekend,100-rsi(2),scorenorotate);
>
>
> Hope that helps with what you're trying to do.
>
>
> Regards,
> David
>
>
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "David Nowotnik" <dnowotnik@xxxx>
wrote:
> > David,
> >
> > Did you get response to this question, as I would also like to
> > develop a script which performs rotational trading but is not
limited
> > by what EnableRotationalTrading() does and does not appear to
allow?
> >
> > I assume that the problem is that there is no option to
> > AllowSameBarEntry, equivalent to AllowSameBarExit. So an exit
cannot
> > trigger the next entry even when Buy is true, but instead, you
have
> > to wait for the next bar in which a Buy condition is met.
> >
> > I tried many variations to your script (I'm sure you did too), to
no
> > avail. The closest was to delay the buy to the first day of the
week
> > following the sale:
> >
> > weekend = DayOfWeek()>Ref(DayOfWeek(),1);
> > FirstDay = DayOfWeek()==1;
> >
> > RSI2 = RSIa(C,2);
> > PositionScore = 100-RSI2;
> >
> > Buy = FirstDay;
> > Sell = weekend;
> >
> > Regards,
> > David
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "dweilmuenster95125"
> > <dweilmuenster95125@xxxx> wrote:
> > >
> > > I am trying to set up a portfolio backtest to:
> > >
> > > - Buy on the last trading day of each week the top 2 equities
in a
> > > watchlist, ranked by 100-RSI(2).
> > >
> > > - Sell those 2 equities on the last trading day of the next
week,
> > and
> > > replace them with 2 equities that satisfy the above rule.
> > >
> > > (Note: EnableRotationalTrading() doesn't do the trick, because
> > > I want to exit unconditionally at the end of the following
week, not
> > > because the current positions fall below a positionrank
threshhold.)
> > >
> > > I'm using the code below, and it almost works. Problem is that
it
> > > skips every other week. E.g., starting at the beginning of
2002, it
> > > buys two stocks on 1/4/2002, and sells them on 1/11/2002. But
it
> > > doesn't buy anything on 1/11/2002. Instead, it buys 2 stocks
again
> > on
> > > 1/18/2002, and sells them on 1/25/2002. Doesn't buy anything on
> > > 1/25/2002. But, it buys 2 stocks on 2/1/2002, and sells them on
> > > 2/8/2002. Etc.
> > >
> > > Suggestions?
> > >
> > > Thanks,
> > > David
> > >
> > > -------------------------------------------------------------
> > >
> > >
> > > SetOption("InitialEquity",100000);
> > > SetOption("CommissionMode",1);
> > > SetOption("CommissionAmount",0);
> > > SetOption("MaxOpenPositions",2);
> > > SetOption("MarginRequirement",100);
> > > SetOption("UsePrevBarEquityForPosSizing",False);
> > > SetOption("AllowPositionShrinking" , True);
> > > SetOption("AllowSameBarExit",False);
> > > SetTradeDelays(0,0,0,0);
> > > BuyPrice = C;
> > > SellPrice = C;
> > > SetPositionSize(50,spsPercentOfEquity);
> > > RoundLotSize = 10;
> > >
> > > weekend = DayOfWeek()>Ref(DayOfWeek(),1);
> > >
> > > RSI2 = RSIa(C,2);
> > > PositionScore = 100-RSI2;
> > >
> > >
> > > Buy = weekend;
> > > Sell = weekend;
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