What the institutional money is doing on EC right now — dark pool, options positioning, and where the news and the money disagree. Free.
The money right now
Dark pool share
49.7% (market avg 51%)
Dark pool volume vs its norm
1.9×
Short share of that
31.4% (norm 49%)
Dark pool share: Off-exchange volume ran 1.9× its norm — and only 31% vs a 49% norm of it was short
Off-exchange prints never touch the public book, so they move size without moving the quote. That is the point of using them. Volume rose while the short share stayed low, meaning most of that extra size was not sell-side. This is what quiet accumulation looks like on the tape.
Source: FINRA · prior close · 2026-09-01
What it means: Institutional buyers are quietly accumulating EC shares off-exchange at nearly double their normal volume, with short-selling activity unusually low—a classic stealth accumulation pattern. The options market shows balanced positioning (calls and puts nearly even) with modest squeeze pressure, suggesting institutions are building positions ahead of the September 15 shareholder meeting without triggering public-book movement.
News vs the money
⚡ DIVERGENCEEcopetrol reshuffles senior management team
News of management changes arrives as off-exchange accumulation surges to 1.88× normal volume with short-selling at historic lows (31% vs 49% norm), suggesting informed buyers are positioning ahead of the September shareholder vote despite neutral news tone.
PRNewsWire
Board nominates new director candidates for shareholder vote
Governance news coincides with stealth accumulation (dark-pool volume 88% above normal, short share 17.7 points below average), indicating institutional positioning ahead of the September 15 vote rather than reactive trading.
PRNewsWire
Ecopetrol sets shareholder meeting procedures for September 15 vote
Procedural announcement arrives as off-exchange short-selling drops to 31%—well below the 49% market norm—while total off-exchange volume nearly doubles, a pattern consistent with large buyers accumulating quietly rather than hedging or exiting.
PRNewsWire
Ecopetrol calls extraordinary shareholder assembly for September 15
The shareholder meeting call aligns with aggressive off-exchange accumulation (1.88× normal volume, 31% short vs 49% norm), suggesting institutional investors are positioning for a specific outcome or announcement at the September 15 vote.
PRNewsWire
Ecopetrol announces senior management changes
Earlier management announcement (Aug. 27) precedes the current stealth accumulation pattern, suggesting informed buyers anticipated or reacted positively to leadership moves and are now building positions ahead of the September shareholder meeting.
PRNewsWire
What is a “divergence”?
A divergence is when the news narrative and the institutional money flow point in opposite directions — a bearish headline while large call premium is bought, or heavy dark-pool selling under a bullish story. It signals the crowd and the desks may disagree.
How to read these numbers
Dark-pool volume — The share of trading executed off-exchange, at wholesalers and dark pools. About half of all US share volume prints there on an ordinary day, so the level by itself says almost nothing. What carries information is the distance from this name’s own recent norm, and whether the off-exchange size ran above its usual.
Off-exchange short share — How much of that off-exchange volume was sold short. The median across all listed names is about 49%, because wholesalers filling retail buy orders sell short and cover later. A reading near half is plumbing, not a bearish vote — compare it to the same name’s own 20-day norm.
Max pain — The price where the most options expire worthless — positioning often gravitates toward it near expiry.
Call wall / Put floor — Strikes with the heaviest call/put open interest — they often act as short-term resistance and support.
Put/Call ratio — Below ~0.7 leans bullish (more calls); above ~1 leans defensive (more puts).