Heya guys,

I've been trying to figure out a method of risking at most 2% of my total account equity per trade. I've been playing around with some strategies and I wanted to figure out if anyone has come up with a ninja script to set the amount risked equal to a % of their account based on their stoploss.

For example, I have a strategy where the stoploss works best at 20 pips and an account with net equity 10,000 USD, I want to limit those 20 pips of EUR/USD to being 2% of my total account or 200$. How that looks to me is:

What risk of 10,000$ is 20 pips = 200$ on EUR/USD?
What about 10,000$ and 40 pips = 200$ on EUR/USD?
Or if 25,000$ account and 20 pips = 500$ on EUR/USD

I greatly appreciate any help with this.

I've never found something like that. It would be the only thing I would like to have mechanical/automated in my trading. Calculating the position size based on my stop and % I like to risk. But there are some indicators that help to determine the position size and risk like this one: https://nexusfi.com/download/ninjatrader-7/indicators/1166-download.html?view

Unfortunately I don't if you find some non-elite-member indicators out there.

What about this :

amount = capital * max risk percentage / (pipvalue * number of pips SL)

your example :
suppose you have 1000 € and want to risk 2%
maximum loss = 20 €

equivalent lot = 1000 € * 0,02 / (0,0001 X 20)

0,02 : 2 %
0,0001 : pip value
20 : number of pips

result being 10000 €
you can maximum buy/sell 10000 € with a 20 pip stop

check : 20 pips of 10.000 € = 10.000 * 0,0020 = 20 €

be careful, you can have slippage on your stop.

I normally trade futures, and there we talk ticks and contracts.