Size based on risk

[shazzmoe]

Was wondering if NinjaScript (6.5 or 7) has any built in features that would make it easy to set the quantity traded based on the stop loss.

For example: my trade system uses a different sized stop based on the trade it's taking. I would like it to make it so that all sized stops risk the same Dollar Amount. So if I chose to risk $1000 on a trade in the S&P eminis it would trade 2 contracts if the stop was 10 points in size and 10 contracts if the stop was 2 points in size etc...

I can think of some ways to manually code this but wanted to make sure there wasn't a faster way before I program it in.

[NinjaTrader_JoshP]

Hi shazzmoe,

Unfortunately there is no built in method that does this. You will need to custom program it.

[shazzmoe]

I wrote up the following and it should do what I want it to do but I'm not sure the syntax for converting a double to an int. (I know there is no reason to convert it to ticks first that was just me trying to see if it would cast properly)

protected int setQuantity(double stop){
            int ticks = stop *4;
            int q;
            if(useDollar){
                q = DollarAmt/(ticks * 12.5);
                return q;
            }
            else
                return Quantity;
        }

[NinjaTrader_JoshP]

To cast it to an int you could do this.

someInt = (int) someDouble;