1. Paolo Rocca: Estimated net worth of US$ 5.3 billion. He is the CEO and majority shareholder of Techint, a multinational steel pipe and engineering conglomerate based in Argentina.
2. Gregorio Perez Companc: Estimated net worth of US$ 3.9 billion. He is the founder and former CEO of Grupo Perez Companc, a diversified holding company with interests in energy, food processing, and other sectors.