Medellin-based cement, electric power and airport/highway concessionaire Grupo Argos announced May 13 that its first quarter (1Q) 2021 net income jumped 622% year-on-year, to COP$190.5 billion (US$51.7 million). Argos credited the boost “mainly due to the increase in sales, our operating leverage and a decrease in financial expenses.” Consolidated revenues rose 3.2%