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How can i calculate lotsize based on Free Margin?

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jeex
87
jeex  
How can i calculate the lot maximum size based on the limits of the free margin?
whroeder1
15924
whroeder1  

You don't want to. Risk has nothing to do with free margin: Account Balance * percentage = Risk = (OrderOpenPrice - OrderStopLoss)*DIR * DeltaPerLot * OrderLots

In addition, you can't open unless you have enough free margin, but to avoid a margin call (stop out) you must have enough at the most adverse excursion (SL) for ALL open order. See my lotsize

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