Phoenix is currently home to several Fortune 1000 companies . Companies in Phoenix include waste management company Allied Waste , electronics corporation Avnet , Apollo Group ( which operates the University of Phoenix ) , mining company Freeport-McMoRan ( recently merged with Phoenix based Phelps Dodge ) , retailer PetSmart , development company Tempo Creative , energy supplier Pinnacle West and retailer CSK Auto . Phoenix is currently home to seven Fortune 1000 companies : waste management company Allied Waste , electronics corporation Avnet , Apollo Group ( which operates the University of Phoenix ) , mining company Freeport-McMoRan ( recently merged with Phoenix based Phelps Dodge ) , retailer PetSmart , energy supplier Pinnacle West and retailer CSK Auto .