Thanks for your reply options-gorge!
I really do get positions to big with my model (2 times ATR now), again:
size in units = ((porfolio size * 0,01)/(ATR*2))
Let's say my account is 50 000, a stock at 150 per unit, with ATR 2, tells me to buy 125 shares at 150, which is 18 750. 37,50% of...