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

MAREX GROUP PLC

218 institutions still hold MAREX GROUP PLC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G5S37H101·218 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 4.3%
vs prior quarter
13F value held
$1.5B
69.0% inst. owned
of float
Holders
218
-57 QoQ
filers reporting
Activity
+103 / −106
+885 added · −815 reduced
this quarter
Concentration
13.16%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

218 institutions reported MAREX GROUP PLC in Q1 2026. BlackRock, Inc. leads at 13.2% of the visible book. -57 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$196M4.4M0.00%Q1 202602
Capital International Investors
CIK 0001562230
$155M3.5M0.04%Q1 202603
FMR LLC
CIK 0000315066
$155M3.5M0.01%Q1 202604
LOOMIS SAYLES & CO L P
CIK 0000312348
$86M1.9M0.12%Q1 202605
SAMLYN CAPITAL, LLC
CIK 0001421097
$75M1.7M1.28%Q1 202606
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$75M1.7M0.06%Q1 202607
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK 0001644956
$70M1.6M0.23%Q1 202608
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$66M1.7M0.02%Q1 202609
Invesco Ltd.
CIK 0000914208
$61M1.4M0.01%Q1 202610
Grandeur Peak Global Advisors, LLC
CIK 0001569137
$59M1.3M13.84%Q1 202611
VICTORY CAPITAL MANAGEMENT INC
CIK 0001040188
$59M1.3M0.04%Q1 202612
JENNISON ASSOCIATES LLC
CIK 0000053417
$57M1.5M0.03%Q4 202513
ROYCE & ASSOCIATES LP
CIK 0000906304
$56M1.3M0.55%Q1 202614
Ophir Asset Management Pty Ltd
CIK 0001844640
$56M1.2M6.47%Q1 202615
Granahan Investment Management, LLC
CIK 0001026710
$55M1.2M2.64%Q1 202616
Artisan Partners Limited Partnership
CIK 0001466153
$54M1.2M0.09%Q1 202617
AMERIPRISE FINANCIAL INC
CIK 0000820027
$43M954K0.01%Q1 202618
Allspring Global Investments Holdings, LLC
CIK 0001890906
$39M909K0.07%Q1 202619
STATE STREET CORP
CIK 0000093751
$39M873K0.00%Q1 202620
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
CIK 0001535845
$32M729K0.05%Q1 2026
Page 1 of 11
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