Inner slope of the dark matter density profile, measured between 1% and 2% of R_200c, as a function of the stellar-to-halo mass ratio. Results are shown for galaxies from the NIHAO (blue) and FIRE-2 (orange) simulations. Solid lines represent fits following Eq. 2 and the 1σ scatter around the fits is indicated with shadowed regions. The trends are compared to literature fits from Di Cintio et al. (2014b), Tollet et al. (2016) and Lazar et al. (2020).