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

KOSMOS ENERGY LTD

270 institutions still hold KOSMOS ENERGY LTD as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 500688106·270 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 4.5%
vs prior quarter
13F value held
$787M
62.0% inst. owned
of float
Holders
270
+120 QoQ
filers reporting
Activity
+26 / −102
+823 added · −735 reduced
this quarter
Concentration
16.76%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

270 institutions reported KOS in Q1 2026. BlackRock, Inc. leads at 16.8% of the visible book. +120 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
$132M47.5M0.00%Q1 202602
STATE STREET CORP
CIK 0000093751
$79M28.2M0.00%Q1 202603
Equinox Partners Investment Management LLC
CIK 0000938552
$57M20.7M23.42%Q1 202604
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC
CIK 0001164833
$56M20.1M0.17%Q1 202605
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$52M18.7M0.04%Q1 202606
Grantham, Mayo, Van Otterloo & Co. LLC
CIK 0001352662
$51M18.3M0.13%Q1 202607
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$39M14.1M0.01%Q1 202608
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$35M12.7M0.00%Q1 202609
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$35M12.6M0.01%Q1 202610
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$34M12.3M0.00%Q1 202611
Invesco Ltd.
CIK 0000914208
$31M11.2M0.00%Q1 202612
GOLDMAN SACHS GROUP INC
CIK 0000886982
$26M9.3M0.00%Q1 202613
Vanguard Portfolio Management
CIK 0002100121
$24M8.6M0.00%Q1 202614
DAVIDSON KEMPNER CAPITAL MANAGEMENT LP
CIK 0001595082
$23M8.4M0.32%Q1 202615
FIRST TRUST ADVISORS LP
CIK 0001125816· Index
$21M7.7M0.02%Q1 202616
M&G Plc
CIK 0001802539
$21M7.0M0.11%Q1 202617
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$20M7.1M0.00%Q1 202618
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$18M6.4M0.00%Q1 202619
Russell Investments Group, Ltd.
CIK 0001692234
$16M5.9M0.02%Q1 202620
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$16M5.8M0.00%Q1 2026
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