Cosmic iron budget: the fraction of Fe locked in stars and in the hot gas in massive halos are shown in red and blue respectively. The fraction associated to gas required to reach the baryon fraction in massive halos (M_h > 5 × 10¹³ M_⊙) is plotted in green. In gray we show the unaccounted fraction, this Fe must reside in gas either in the halos of low mass systems (CGM) or outside them.