Evolution of the stellar mass fraction in units of the universal baryon fraction as a function of halo mass. The shaded regions show, from light to dark gray, the ﹩z=3,2,1﹩ data from Behroozi et al. (2013) and z = 0 from Kravtsov et al. (2014), where the gray bands show the region ﹩\pm 2\sigma ﹩ around the mean relation. The points show observational inferences of stellar fractions for galaxies at ﹩z\approx 0﹩ using weak lensing (circles) for late-type (blue) and early-type (red) systems by Mandelbaum et al. (2006) and Hudson et al. (2015). Magenta triangles show estimates using satellite kinematics by More et al. (2011).