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Who owns EC?

Institutional ownership of Ecopetrol S.A. from Form 13F, Q2 2026

164 institutional managers reported holding Ecopetrol S.A. (EC) in Form 13F filings for Q2 2026, with 28,265,509 shares worth $403M. The largest reported holder was BlackRock, Inc. Managers that filed both quarters added a net 2,947,969 shares (+11.7%). 35 opened new positions and 32 sold out.

Funds holding
164
Value held
$403M
New / sold out
35 / 32
Net shares, same filers
+11.7%

Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Largest holders of EC

FundValueShare of 13F holdingsSharesMove
BlackRock, Inc.$58.5M14.5%4,105,675Added
Marshall Wace, LLP$37.5M9.3%2,636,516Added
Charles Schwab Investment Management Inc$26.2M6.5%1,841,703Added
Vanguard Fiduciary Trust Co$25.9M6.4%1,817,855Added
Vanguard Capital Management LLC$17.8M4.4%1,246,884Added
Two Sigma Investments, LP$14.2M3.5%996,387Trimmed
American Century Companies Inc$13.7M3.4%962,783Added
Renaissance Technologies LLC$12.8M3.2%899,400Added
Goldman Sachs Group Inc$12.7M3.2%890,821Added
Morgan Stanley$12.6M3.1%884,827Added
Brevan Howard Capital Management LP$11.9M2.9%828,314New
Millennium Management LLC$10.6M2.6%747,485Added
Aventail Capital Group, LP$10.6M2.6%747,141Added
Barclays PLC$10.5M2.6%736,904Added
Connor, Clark & Lunn Investment Management Ltd.$9.8M2.4%688,121Trimmed
UBS Group AG$7.9M2.0%552,156Added
Truffle Hound Capital, LLC$6.1M1.5%430,000Trimmed
Banco BTG Pactual S.A.$5.7M1.4%402,757Added
Group One Trading LLC$5.3M1.3%372,004Added
State Street Corp$4.7M1.2%326,994Trimmed
CWA Asset Management Group, LLC$4.4M1.1%309,290Added
Fisher Asset Management, LLC$3.6M0.9%250,730Trimmed
JPMorgan Chase & Co$3.6M0.9%244,355Trimmed
D. E. Shaw & Co., Inc.$2.9M0.7%202,778Trimmed
Nuveen, LLC$2.8M0.7%199,087New

Share of 13F holdings is each fund's shares as a share of the 28,265,509 EC shares all 13F filers reported, not of shares outstanding.

Biggest buyers in Q2 2026

  1. Marshall Wace, LLP Added+$29.4M
  2. BlackRock, Inc. Added+$19.6M
  3. Brevan Howard Capital Management LP New+$11.9M
  4. Renaissance Technologies LLC Added+$9.4M
  5. Barclays PLC Added+$6.6M
  6. Millennium Management LLC Added+$6.0M
  7. Morgan Stanley Added+$4.9M
  8. UBS Group AG Added+$4.7M
  9. Aventail Capital Group, LP Added+$4.1M
  10. Group One Trading LLC Added+$3.4M

Biggest sellers in Q2 2026

  1. D. E. Shaw & Co., Inc. Trimmed-$15.2M
  2. Connor, Clark & Lunn Investment Management Ltd. Trimmed-$12.3M
  3. Two Sigma Investments, LP Trimmed-$12.2M
  4. Jane Street Group, LLC Sold out-$7.7M
  5. Arrowstreet Capital, Limited Partnership Sold out-$6.5M
  6. JPMorgan Chase & Co Trimmed-$5.6M
  7. XTX Topco Ltd Trimmed-$4.0M
  8. Voloridge Investment Management, LLC Sold out-$3.0M
  9. Engineers Gate Manager LP Trimmed-$2.7M
  10. BW Gestao de Investimentos Ltda. Sold out-$2.4M

The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $138M and sold $97.3M; 57 added and 48 trimmed.

Questions about EC ownership

Who owns EC stock?
164 institutional investment managers reported EC positions in their Form 13F filings for Q2 2026, holding 28,265,509 shares worth $403M in total. BlackRock, Inc. reported the largest position.
Are funds buying or selling EC?
In Q2 2026, 35 managers opened new EC positions, 57 added, 48 trimmed and 32 sold out. Managers that filed in both quarters added a net 2,947,969 shares.
How current is this EC institutional ownership data?
It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to EC by CUSIP. Options are left out. EC news and filings · EC insider trades · Top funds