Fractions of simulated SF halos at high-z that will evolve into clusters with halo mass M₂₀₀ > 10¹⁴ M_⊙, into groups with halo mass M₂₀₀ = [1 − 10]×10¹³ M_⊙, and into single halos with M₂₀₀ < 1 × 10¹³ M_⊙ by z = 0. We also show the fraction of simulated halos that will become the main sub-halo of a halo at z = 0 (turquoise), or a substructure (sub-halo) inside a given halo (red).