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Hello,
Sorry but there is NOTHING "esoteric" about this.
In AFL you define *WHEN* (buy/sell/short/cover) and *AT WHAT PRICE*
(buyprice/sellprice/shortprice/coverprice) you enter/exit the trade.
It is as easy as it can only be.
I understand that some people are used to BUY LIMIT/STOP/STOP LIMIT / ETC
orders and I will provide this alternative way of specifying your rules some day,
however I can not agree that current method is complicated (actually it is easier
than having at 4-10 types of orders per each buy/sell/short/cover rule (16-40 functions to define your rules))
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: <phsst@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, February 23, 2003 5:59 AM
Subject: [amibroker] Re: cannot buy on open
> Yuki,
>
> I've read the previous posts on this subject and feel the need to
> contribute to your side of the issue:
>
> AB is almost bulletproof on the technical indicators and triggers
> needed to initiate backtest trades...
>
> HOWEVER, I find that the ENTRY / EXIT stradegies of AB are not
> intuitive, and that a good bit of 'tweaking' and 'testing' is
> necessary to even attempt to come close to real-world orders for
> entry/exit positions of securities.
>
> For example, for years I have traded certain strategies as follows:
>
> After hours Buy or Short Limit order @ todays (EOD) close or "BETTER @
> OPEN".
>
> No StopLoss entered on day of order entry execution.
>
> After Mkt closes on day of order execution (and each day
> thereafter)... place trailing stop loss order .10cents above or below
> todays high or low (only if new stop moves in direction of position).
>
> The above has been a successful strategy with my own backtesting
> software and actual trading discipline.
>
> I cannot figure out how to accomplish the above in AB.
>
> And if folks are tolerant, I think I can come up with some other
> situations that have eluded me in past AB backtests that I can
> accomplish with my own software.
>
> And for those who wonder why I fool around with AB... TJ has done an
> unbelievable job on the many technical indicators that are needed to
> setup entry and exit signals that my own software is not capable of.
>
> I tend to still rely upon my own backtesting (called 'SIM') for
> verification of real trading stradegies, but only because I haven't
> figured out the more esoteric issues of AB Order/Entry issues.
>
> Regards,
>
> Phsst
>
> --- In amibroker@xxxxxxxxxxxxxxx, Yuki Taga <yukitaga@xxxx> wrote:
> > Hi William,
> >
> > Sunday, February 23, 2003, 3:23:32 PM, you wrote:
> >
> > WP> There is an Option in Backtester Settings named "Allow same bar
> > WP> exit (Single bar trade", ensure that is checked.
> >
> > WP> This works for me with a backtest but not a scan.
> > WP> Post again if you still have problems.
> >
> > I see. Okay, now some simple code works correctly, but not all. For
> > example, here is another stupid variation, but a variation that I
> > cannot get to work properly, although I think it should:
> >
> > //an outside day with a down close, buying on the next open if the
> > //open is lower than the previous day's close
> >
> > //Buystop = Open < Ref(C,-1);
> >
> > Buy = Ref(H,-1) > Ref(H,-2) AND Ref(L,-1) < Ref(L,-2) AND Ref(C,-1)
> < Ref(L,-1) AND Open < Ref(C,-1);
> >
> > Sell= 1;
> >
> > SetTradeDelays(0,0,0,0);
> >
> > BuyPrice = Open;
> >
> > SellPrice = Close;
> >
> > I also tried using the commented-out 'buystop' variable. In both
> > cases, no buy ever takes place. And it's not because the condition
> > is never present. ^^_^^
> >
> > Best,
> >
> > Yuki
> >
> > mailto:yukitaga@x...
>
>
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