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2016.04.26 16:35
MM % volatility

MM % volatility - script for MetaTrader 4

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votes: 6
Buy.mq4 (0.45 KB)view
Sell.mq4 (0.45 KB)view
Trade.mq4 (3.22 KB)view
\MQL4\Include\
Trade.mqh (0.51 KB)view

Lot calculation and position opening by market with the consideration of the asset volatility. StopLoss is set automatically, TakeProfit - on demand, as a multiple of R.

LotSize:=RiskAmount/(PointPrice*StopLossPoints);
RiskAmount:=FreeMargin*RiskPercent/100;
StopLossPoints:=kATR*ATR(TimeFrame,RiskAtrPeriod)/PointSize;
TakeProfitPoints:=StopLossPoints*ProfitToLossRatio.

The working function is Trade, in the Trade.mq4 library file. Declaration:

int Trade(string smb, int TimeFrame, int cmd, bool ShowQ, int Slippage, bool SetProfit, double MaxRiskPercent, int RiskAtrPeriod, double RiskMulATR, double ProfitToLossRatio), where:

smb - name of the asset;
TimeFrame - used to determine the StopLossPoints;
cmd - OP_BUY or OP_SELL;
ShowQ - display the dialog asking confirmation (False - no dialog);
Slippage - slippage in points;
SetProfit - if True - the TakeProfit will be specified in the orders;
MaxRiskPercent - % FreeMargin, allowed to risk (2% - classic, 5% - aggressive, higher - based on luck);
RiskAtrPeriod - the number of last bars to calculate the true range (21 is sufficient);
RiskMulATR - to determine the StopLossPoints;
ProfitToLossRatio - multiplicity of R (for example, 5).

Attached scripts:
Buy.mq4/Sell.mq4 - buy/sell the current asset, timeframe, with confirmation dialog, slippage of 1 point, 2% risk, RiskAtrPeriod=21, RiskMulATR=1, ProfitToLossRatio=10;
Buy_nonQuery.mq4/Sell_nonQuery.mq4 - the same settings, but without the dialog and with slippage=0.

How to install:
Trade.mqh - copy to the 'include' subdirectory of the 'experts' directory of the MetaTrader root folder;
Trade.mq4 - copy to the 'libraries' subdirectory of the 'experts' directory of the MetaTrader root folder and compile;
Buy.mq4, Buy_nonQuery.mq4, Sell.mq4, Sell_nonQuery.mq4 - copy to the 'scripts' subdirectory of the 'experts' directory of the MetaTrader root folder and compile.

Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/7387

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