C arlos March Delgado is a Spanish billionaire and the patriarch of the March family, one of Spain's wealthiest and most discreet banking dynasties. He is the grandson of Juan March, the controversial founder of the family's financial empire. Carlos, along with his brother Juan, inherited and has led the family's main business, Banca March, and its investment arm, Corporación Financiera Alba.

As the chairman of Corporación Financiera Alba, Carlos March Delgado has overseen a diversified portfolio of strategic investments in major Spanish companies across various sectors, including construction (ACS), food (Ebro Foods), and gas infrastructure (Naturgy). The family's investment philosophy is characterized by a conservative, long-term approach. Banca March remains one of the few completely family-owned banks in Spain, with a focus on private banking and wealth management. He has passed on the chairmanship of Alba to his son, but remains a key figure in the family's enduring financial legacy.