Inconsistency in stop price - is this due to EOD data?

[Mocazilla]

Hi there,

I'm trying to understand how applyStop works a simple system I am trying to test. I want to sell when the stock closes below the 10day EMA or when my set stop that I import into Amibroker triggers.

Symbol	Trade	Date	Price	Shares	Stop
PLAN	Buy	9/1/2020	62.83	1000	61.39
GRWG	Buy	9/2/2020	16.57	4000	16.17
BA	Buy	9/3/2020	179.75	500	177.21

I have 3 stocks with different results here. The stop price that I want to be triggered is in the "stop" column in the CSV file. All stocks should be stopped out on the same day and at that price. However, only PLAN worked as intended and stopped out next day. GRWG sold next day at open (although the price did go lower than the stop the prior day) while BA sold it end-of-day. May I know why there is this consistency - is this due to EOD data being used, and my "buy price" being used as EOD data vs intraday?

Here is the code I am using, adapted from http://www.amibroker.com/kb/2014/09/30/gen-backtest-from-a-file/

file = "C:\\Users\\Bryan\\Documents\\Amibrokertest.csv"; // change this to real location of your data file
dt = DateTime();
//
// Initialize variables
Buy = Sell = possize = stopPrice = 0;
//
fh = fopen( file, "r" );
//
if( fh )
 {
     while( ! feof( fh ) )
     {
         line = fgets( fh );
         // get the ticker symbol from the file
         sym = StrExtract( line, 0 );
         // if ticker matches current symbol
         if ( Name() == sym )
         {
             // extract data from line of text
             trade = StrExtract( line, 1 );
             trade_datetime = StrToDateTime( StrExtract( line, 2 ) );
             price = StrToNum( StrExtract( line, 3 ) );
             shares = StrToNum( StrExtract( line, 4 ) );
             stop = StrToNum( StrExtract( line, 5 ) );
             //
             if ( trade == "Buy" )
             {
                 newbuy = dt == trade_datetime;
                 Buy = Buy OR newbuy; // combine previous buy signals with new
                 BuyPrice = IIf( newbuy, price, BuyPrice );
                 possize = IIf( newbuy, shares, possize );
                 stopPrice = IIf(newbuy, stop, stopPrice );
             }
             //
             if ( trade == "Sell" )
             {
                 newsell = dt == trade_datetime;
                 Sell = Sell OR newsell; // combine previous sell signals with new
                 SellPrice = IIf( newsell, price, SellPrice );
             }
         }
     }
     //
     fclose( fh );
 }
 else
 {
     Error( "ERROR: file can not be open" );
 }
//
SetOption("InitialEquity", 1576836);
SetOption("AccountMargin", 50);
SetPositionSize( possize, spsShares );
SetOption("MaxOpenPositions", 200);

Short = Cover = 0;
StopLoss = BuyPrice - stopPrice;
ApplyStop(stopTypeLoss, stopModePoint, StopLoss, ExitAtStop = 1);
Sell = Close< EMA(Close, 10);

[fxshrat]

@Mocazilla,

Here are required steps before getting further programming help.

1. Please make sure to verify forum account before. See here
2. If you copy code from other sources then please insert credit into the copied code and with link if available.
3. You have to read ApplyStop documentation.
4. The code you posted and modified needs some restructure and additions.

Anyway it does work (as you expect it to work) after following steps 3. (and 4.) as you can see here

Again if you still struggle then please first verify user account.

[Mocazilla]

Verified - appreciate the help. Have managed to get the same output for you for those trades. I added SetOption("ActivateStopsImmediately", True);