Formerly Bogota's top builder, Sarmiento, 73, now concentrates on Grupo Aval, his profitable network of regional banks. Grooming son Luis Carlos Jr. to take over family empire, which also includes investments in telecom and construction. Net worth up significantly, thanks largely to Colombia's blistering stock market, the world's second best performing in 2005. Kicks back at Cotton Bay Club, his private island in the Bahamas. Member of the Order of Boyaca, one of Colombia's highest civilian honors..
