As Mr. Trump has cracked down on immigration flows, called for a Mexico-financed wall on the border and blamed Mexico for stealing American jobs, Mr. Slim has trashed the wall and said it's time for his countrymen to chart their economic future without the U.S.
Carlos Slim, Mexican billionaire, sees world of opportunity in what Donald Trump rejects →
• YPF, Argentina's state-controlled oil and gas producer, jumped 11 percent after Mexican telecommunications billionaire Carlos Slim said he had acquired an 8.4 percent stake in the company.