Ecopetrol S.A. (EC) is down today as the ADR trades ex-dividend, meaning new buyers no longer receive the recently declared $0.6612 per-share dividend payable May 7, 2026; the share price typically adjusts lower by roughly the dividend amount on the ex-dividend date. With the market open, that mechanical reset is a common driver of a one-day drop even without any change in operating fundamentals. (marketbeat.com)

The move is also landing in a market that has been marking up risk around Colombia-related assets after S&P lowered Ecopetrol’s issuer credit rating to reflect Colombia’s sovereign downgrade earlier this month. That backdrop can make dividend-driven dips feel heavier, especially for foreign investors who treat the ADR as a high-yield emerging-market energy exposure. (finance.yahoo.com)

Focus now turns to the upcoming earnings event window in early-to-mid May, with market calendars pointing to a May 12, 2026 earnings date for the ADR. Near-term sentiment is likely to stay tied to (1) dividend mechanics and yield sustainability, (2) the credit/sovereign narrative, and (3) oil-price volatility, which has remained elevated amid geopolitical headlines. (investing.com)