Position size strategy gives too large positions

I’m using a position size model that gives number of shares to buy depending on my risk and ATR(14)-multiple. #shares = amount risking / ATR-factor

I risk 1% of my capital and use 1.5 x ATR. The problem is that with low volatile stocks, this model will give me to big positions compared to my capital. Positions over 15% of capital.

Does anyone have a similar model, that uses risk percentage and ATR, but also incorporates totalt capital so that positions will be at maximum 10%?

Position size strategy gives too large positions