Company · Ownership research

ECOPETROL S.A. EC

CIK 0001444406 · CUSIP 279158109

Insider tradingInitial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 279158109 (EC), not CUSIP 279158909 (EC), CUSIP 279158959 (EC), and does not merge CUSIPs.

This page lists the top 20 of 164 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$58.46M 4,105,675 shares	0.00%	+1.38M(+50.40%)Added	SEC filing ↗ Aug 7, 2026	▾
02	MARSHALL WACE, LLP CIK 1318757 · View history	$37.54M 2,636,516 shares	0.03%	+2.07M(+362.30%)Added	SEC filing ↗ Aug 13, 2026	▾
03	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$26.23M 1,841,703 shares	0.00%	+176.97K(+10.60%)Added	SEC filing ↗ Aug 14, 2026	▾
04	VANGUARD FIDUCIARY TRUST CO CIK 933478 · View history	$25.89M 1,817,855 shares	0.01%	+4.04K(+0.20%)Added	SEC filing ↗ Aug 13, 2026	▾
05	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · View history	$17.76M 1,246,884 shares	0.00%	+44.79K(+3.70%)Added	SEC filing ↗ Aug 13, 2026	▾
06	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$14.19M 996,387 shares	0.01%	-856.90K(-46.20%)Reduced	SEC filing ↗ Aug 14, 2026	▾
07	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$13.71M 962,783 shares	0.01%	+78.72K(+8.90%)Added	SEC filing ↗ Aug 12, 2026	▾
08	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$12.81M 899,400 shares	0.02%	+660.40K(+276.30%)Added	SEC filing ↗ Aug 13, 2026	▾
09	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$12.69M 890,821 shares	0.00%	+8.93K(+1.00%)Added	SEC filing ↗ Aug 14, 2026	▾
10	MORGAN STANLEY CIK 895421 · View history	$12.60M 884,827 shares	0.00%	+347.24K(+64.60%)Added	SEC filing ↗ Aug 13, 2026	▾
11	Brevan Howard Capital Management LP CIK 1512857 · View history	$11.91M 828,314 shares	0.17%	+828.31KNew	SEC filing ↗ Aug 14, 2026	▾
12	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$10.64M 747,485 shares	0.01%	+423.43K(+130.70%)Added	SEC filing ↗ Aug 14, 2026	▾
13	Aventail Capital Group, LP CIK 1803822 · View history	$10.64M 747,141 shares	0.61%	+286.94K(+62.40%)Added	SEC filing ↗ Aug 14, 2026	▾
14	BARCLAYS PLC CIK 312069 · View history	$10.49M 736,904 shares	0.00%	+466.41K(+172.40%)Added	SEC filing ↗ Aug 14, 2026	▾
15	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$9.80M 688,121 shares	0.02%	-860.76K(-55.60%)Reduced	SEC filing ↗ Aug 13, 2026	▾
16	UBS Group AG CIK 1610520 · View history	$7.86M 552,156 shares	0.00%	+327.57K(+145.90%)Added	SEC filing ↗ Aug 13, 2026	▾
17	Truffle Hound Capital, LLC CIK 1595862 · View history	$6.12M 430,000 shares	3.86%	-120.00K(-21.80%)Reduced	SEC filing ↗ Aug 6, 2026	▾
18	Banco BTG Pactual S.A. CIK 1536080 · View history	$5.74M 402,757 shares	0.76%	+216.81K(+116.60%)Added	SEC filing ↗ Aug 7, 2026	▾
19	GROUP ONE TRADING LLC CIK 932540 · View history	$5.30M 372,004 shares	0.15%	+240.86K(+183.70%)Added	SEC filing ↗ Aug 14, 2026	▾
20	STATE STREET CORP CIK 93751 · View history	$4.66M 326,994 shares	0.00%	-34.56K(-9.60%)Reduced	SEC filing ↗ Aug 7, 2026	▾

Showing 20 / 164 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

164

Cancelled or null records excluded

Disclosed shares

28,221,831

Not deduplicated across managers

Disclosed value

$402.13M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

ECOPETROL S.A. · Q2 2026

Explore all 164 reporting institutions.

This page includes 20 of 164 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.