The relationship between dark halo mass and stellar mass encodes the
entire evolutionary history of galaxies and is a key component in
understanding galaxy formation. Since the physical processes driving
galaxy formation and regulating star formation are expected to
correlate closely to the mass of the dark matter haloes which host
them, a profitable avenue to pursue in understanding the evolution of
galaxies is to investigate the relationship between the mass in stars
and the dark matter halo mass. In my talk I will present new
measurements of this relationship in the COSMOS and CFHTLS surveys,
which, taken together, comprise the epoch when almost all baryonic
mass assembled into stars and galaxies.