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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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