/* 

3.3% Next Day System

This is a very simple trading system.
Tested and optimized on Dow 30 stocks.
Buy stocks if price moving between open and close is higher than 3.3%.
And sell next day on BuyPrice+3.3% or on closing price.
Use previous bar equity for position sizing.

*/

OptimizerSetEngine("cmae"); // you can also use "spso" or "trib" here

// system parameter setup
percent = Optimize("Percent",3.3,1,5,0.1);
percent = (1 + percent/100);

// plot chart

SetChartBkColor(ParamColor("BackGround Color", colorLightGrey)); 

SetChartOptions(0,chartShowArrows|chartShowDates);
_N(Title = StrFormat("{{NAME}} - {{INTERVAL}} {{DATE}} Open %g, Hi %g, Lo %g, Close %g (%.1f%%) {{VALUES}}", O, H, L, C, SelectedValue( ROC( C, 1 ) ) ));
Plot( C, "Close", ParamColor("Color", colorBlack ), styleNoTitle | ParamStyle("Style") | GetPriceStyle() ); 

_SECTION_BEGIN("Background text");
C13=Param("fonts",20,10,30,1 );
C14=Param("left-right",2.1,1.0,5.0,0.1 );
C15=Param("up-down",12,1,20,1 );
pxwidth = Status("pxwidth");
pxheight = Status("pxheight");
GfxSetBkMode(transparent=1);
GfxSetOverlayMode(1);
GfxSelectFont("Tahoma", Status("pxheight")/C13 );
GfxSetTextAlign( 6 );
GfxTextOut( Name(), Status("pxwidth")/C14, Status("pxheight")/C15 );
GfxSelectFont("Tahoma", Status("pxheight")/C13*0.9 );
GfxTextOut( "3.3%", Status("pxwidth")/C14, Status("pxheight")/C15*2.5 );
GfxTextOut( "Next Day System", Status("pxwidth")/C14, Status("pxheight")/C15*4 );
GfxSelectFont("Tahoma", Status("pxheight")/C13*0.5 );
GfxTextOut( "", Status("pxwidth")/C14, Status("pxheight")/C15*4 );
GfxSelectFont("MS Sans Serif", 10, 500, False, False, 0);


// the system

Buy = C > O*percent;
//Sell = O<(BuyPrice*percent);
Sell = BuyPrice*percent;

Cover=Buy=ExRem(Buy,Sell);
Short=Sell=ExRem(Sell,Buy);
Short=ExRem(Short,Cover);
Cover=ExRem(Cover,Short);

Filter = Buy OR Sell;

// trade on next day
SetTradeDelays( 1, 1, 1, 1 );
BuyPrice = Open;
SellPrice = BuyPrice*percent; 
//ApplyStop( stopTypeProfit, stopModePercent, Optimize( "Profit", 3.3, 2, 30, 1 ), True ); 

PlotShapes(IIf(Buy, shapeCircle, shapeNone),colorGreen, 0,Open, 0);
PlotShapes(IIf(Sell, shapeCircle, shapeNone),colorRed, 0,Close, 0);