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Re: Position Sizing



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Pablo wrote:
>I'm trying to code the following:
>"Size position so that risk to protective stop = 10% of current equity"

I don't know how you would size a position so that the stop is 10%
of your equity.  You can size a position relative to equity, or size
your stop relative to equity, but not both.

Equity is simply startquity + NetProfit, where startequity is your
own value and NetProfit is Tradestation's internal number.  A 10%
stop based on current equity would be
 0.1 * (startequity + NetProfit).

A position size that's 10% of your equity is
 IntPortion((startequity + NetProfit) * 0.1 / margin + 0.5)

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