Evolution of M_⋆,in, defined as the stellar mass inside a spherical region of radius 30 kpc, SMBH mass, and M_⋆,out, defined as the total mass of the stars enclosed in a spherical shell with radii 30 kpc and 100 kpc. All the quantities are normalized to their respective values at z = 0. Solid lines represent median values and shadowed regions represent 16 and 84 percentiles. The three different blue lines represent three definition of M_⋆,out. In particular the thin blue solid line is the stellar mass in a spherical shell with radii 100 kpc and 200 kpc while the dashed blue line is the stellar mass in a spherical shell with radii 50 kpc and 350 kpc.