Left panel: red points: average stellar mass density profile of GCLASS, in physical units. Black points: stellar mass density profile at low-z, at the same physical scale. The orange region marks the part of the z ~ 1 profile that is in excess of the z ~ 0.15 profile, and comprises a stellar mass of about 7 × 10¹¹M_⊙. Black dotted: stellar mass at z ~ 0.15, including BCG+ICL. Dashed purple and solid blue: stellar mass in blue galaxies at z ~ 1 and z ~ 0.15, respectively. Right panel: dark matter profiles from N-body simulations, using the average profile parameters from Duffy et al. (2008) and Dutton & Macciò (2014), but with the profiles plotted on the same physical scale. Shown are profiles at redshifts of z = 1.00 (red) and z = 0.15 (black), with masses of M₂₀₀ = 3 × 10¹⁴M_⊙ and M₂₀₀ = 9 × 10¹⁴M_⊙, respectively.