In the latest close session, Ecopetrol (EC) was down 1.44% at $8.88. The stock trailed the S&P 500, which registered a daily gain of 0.49%. Elsewhere, the Dow saw an upswing of 0.38%, while the tech-heavy Nasdaq appreciated by 0.72%. The oil and natural gas exploration company's shares have seen an increase of 1.24% over the last month, not keeping up with the Oils-Energy sector's gain of 3.95% and the S&P 500's gain of 2.99%.The upcoming earnings release of Ecopetrol will be of great interest to investors. ...