Medellin-based electric power, cement, construction and highway/airport concessionaire Grupo Argos announced May 15 that its first quarter (1Q) 2018 net profits jumped 53% year-on-year, to COP$210 billion (US$73 million). Consolidated earnings before interest, taxes, depreciation and amortization (EBITDA) rose 9% year-on-year, to COP$941 billion (US$328 million), while