# Risk constant USD per %/ATR

Very similar with the [Risk % capital per %/ATR](https://docs.runbot.io/risk-management-boxes/position-size/risk-capital-per-atr), you can risk a constant amount of dollars (instead of % capital) for a specific price movement. After each trade, it will calculate your new capital to size accordingly the next orders.

For a x% price move, you will risk y dollars.  

*Ex 1: Capital is 10 000$, \[A risk of 200$] \[At 1% of price change]*\
*Additionnal infos: In the Exit position rules Box, stop loss is set at 1% \[Market stop at 1%] and Bitcoin market price at entry is 20 000$. We want to long.*

*In that example, we want to risk a maximum of 200$ each times the market drops by 1%. To calculate our initial long value position, we consider our stop loss to be 1% lower market price at entry.* 

*If the market drops 1% and triggers our stop loss, the position will be closed at 19 800$ Bitcoin price. Which represents a 200$ drop.* 

*To size accordingly, the bot will open a long position of 20 000$. If the position is stopped, the loss will be 200$.*

*Ex 2: The bot won the last trade, for 5 000$ profit. The capital is now valued at 15 000$.*\
*\[A risk of 500$] \[At 1% of price change]*\
*Additionnal infos: In the Exit position rules Box, stop loss is set at 4% \[Market stop at 4%] and Bitcoin market price at entry is 25 000$. We want to long.*

*The bot want to enter a long position at 25 000$ Bitcoin price, with a maximum risk of 500$ per percent.*\
*The bot will open a long position of 50 000$ (*25000 \* (**500** / 25000) / **1%**).\
*The market drops 4% and triggers our stop loss. The total loss is 2000$ (50000 \* 4%) (without fees and slippage).* 

***

That feature is not a triggers out or a stop loss. It is only designed to calculate your initial position size accordingly to a certain risk. For a better synergy, you must consider your conditions on the Exit position rules Box.