DOSSIER · 13F Holders · Q1 2026Cheap mega-capRe-rated
EC

ECOPETROL S A

169 institutions still hold ECOPETROL S A as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 279158109·169 13F holders·last filed Mar 31, 2026
Market cap
9.0%
vs prior quarter
13F value held
$306M
63.0% inst. owned
of float
Holders
169
+42 QoQ
filers reporting
Activity
+67 / −102
+786 added · −757 reduced
this quarter
Concentration
13.37%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

169 institutions reported EC in Q1 2026. BlackRock, Inc. leads at 13.4% of the visible book. +42 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$41M2.7M0.00%Q1 2026
02
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$34M2.3M0.00%Q1 2026
03
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$28M1.9M0.02%Q1 2026
04
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$27M1.8M0.01%Q1 2026
05
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$25M1.7M0.00%Q1 2026
06
Connor, Clark & Lunn Investment Management Ltd.
CIK 0001596800
$23M1.5M0.05%Q1 2026
07
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$18M1.2M0.00%Q1 2026
08
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$13M884K0.01%Q1 2026
09
GOLDMAN SACHS GROUP INC
CIK 0000886982
$13M882K0.00%Q1 2026
10
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$13M841K0.00%Q1 2026
11
CITADEL ADVISORS LLC
CIK 0001423053
$10M954K0.00%Q4 2025
12
JPMORGAN CHASE & CO
CIK 0000019617
$9M632K0.00%Q1 2026
13
Truffle Hound Capital, LLC
CIK 0001595862
$8M550K2.14%Q1 2026
14
MORGAN STANLEY
CIK 0000895421
$8M538K0.00%Q1 2026
15
D. E. Shaw & Co., Inc.
CIK 0001009207
$7M691K0.00%Q4 2025
16
Aventail Capital Group, LP
CIK 0001803822
$7M460K0.33%Q1 2026
17
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$7M436K0.00%Q1 2026
18
STATE STREET CORP
CIK 0000093751
$5M362K0.00%Q1 2026
19
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$5M324K0.00%Q1 2026
20
Fisher Asset Management, LLC
CIK 0000850529
$5M324K0.00%Q1 2026
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