[amibroker] Re: Are Trailing Stops & Stop Profit instructions giving reliable results ?

["rem_yah" <rem_yah@xxxxxxxxx>]

Hi, 

Thank you very much for your explanation.

I misunderstood the meaning of  "Activate stops
immediately". After setting it OFF, the instruction ApplyStop
(stopTypeProfit) works as I wanted.

As far as ApplyStop (stopTypeTrailing) , after analyzing the code from
http://www.amibroker.com/kb/2007/03/24/how-to-plot-a-trailing-stop-in-th\
e-price-chart/
it seems to me that Amibroker calculates trailing stop levels based on
extremes of  bars, including the order entry bar( what make sometimes
additional signal, as in my example).
So my question: Is there any way, in standard Amibroker settings, to
force ApplyStop to calculate trailing stop level for the entry bar(ONLY)
based on entry price and on Close (and for all other bars - on extremes)
?

Best Regards 
Rem




--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:

Wrong settings. Read the manual.

Also "activate stops immediatelly" should only be used
if you enter trades on *OPEN* price as it is said in the manual (see
ApplyStop
description).

Your pictures show clearly that you are _NOT_ entering on open !

Also check this:
http://www.amibroker.com/kb/2007/03/24/how-to-plot-a-trailing-stop-in-th\
e-price-\
chart/

Best regards,
Tomasz Janeczko

amibroker.com



----- Original Message -----
From: "rem_yah" <rem_yah@xxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, April 05, 2009 3:08 AM
Subject: [amibroker] Are Trailing Stops & Stop Profit instructions
giving
reliable results ?


Hi,

Are Trailing Stops and Stop Profit instructions in AmiBroker giving
reliable results ?

I created a simple code ( see the AFL code below), but
when I back-test it, I obtain a lot of ApplyStop (stopTypeTrailing &
stopTypeProfit) false
signals, as shown on the picture ( a false stopTypeTrailing on the left
and a false stopTypeProfit on the right)
http://img54.imageshack.us/img54/7419/e007.gif

My settings to this strategy ( I have marked ON) :
Activate stops immediately, Reverse entry signal forces exit, Allow same
bar exit.

Can somebody check it and confirm or deny my observations ?

Regards
Rem


PositionSize = MarginDeposit = 1;

ApplyStop(stopTypeTrailing, stopModePoint, TickSize *
Param("stopTypeTrailing", 30, 2, 100, 1 ), 1 );
ApplyStop(stopTypeProfit, stopModePoint, TickSize *
Param("stopTypeProfit", 10, 2, 100, 1 ), 1 );



bottomLevel = Open - 10*TickSize; // = Buy level
Buy = bottomLevel >= Low ;
BuyPrice = bottomLevel ;

topLevel = Open + 10*TickSize; // = Short level
Short = topLevel <= High ;
ShortPrice = topLevel ;
Cover= Buy ;
Sell= Short ;

CoverPrice= IIf( bottomLevel >= Low, BuyPrice, Close);
SellPrice= IIf(topLevel <= High, ShortPrice, Close);

Plot(topLevel, "topLevel", colorRed);
Plot(bottomLevel, "bottomLevel", colorGreen);





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