S&P maintains Ecopetrol's global credit rating at BB+
1. S&P maintained Ecopetrol's credit rating at BB+, with a negative outlook. 2. Company's Stand Alone Credit Profile rating downgraded from bbb- to bb+. 3. Lower oil prices and exchange rate volatility have impacted financial performance. 4. Ecopetrol's debt/EBITDA ratio is projected to remain above 2.0. 5. Positive growth strategy highlighted, focusing on diversification and profitability.