Moody's cited Ecopetrol's "improving credit metrics and strong liquidity," but recognized the remaining risk associated with its low 6.7 years of reserve life.
Though the notes have a Baa1 rating with a stable outlook, Moody's has concerns over Sura's leverage, regional market volatility, and the immature capital markets of Latin America.
S&P made no changes but suggested it could downgrade Colombia's sovereign rating if the country's fiscal debt burden does not improve within the next 18 months.