13F Insight
DOSSIER · 13F Holders · Q1 2026

ARCH CAP GROUP LTD

945 institutions still hold ARCH CAP GROUP LTD as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G0450A105·945 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$18.8B
visible holders
Holders
945
filers reporting
Concentration
16.05%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

945 institutions reported ARCH CAP GROUP LTD in Q1 2026. BlackRock, Inc. leads at 16.0% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$3.0B31.4M0.05%Q1 202602
Artisan Partners Limited Partnership
CIK 0001466153
$2.2B22.7M3.49%Q1 202603
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$2.2B22.6M0.05%Q1 202604
BAMCO INC /NY/
CIK 0001017918
$1.6B16.7M4.84%Q1 202605
STATE STREET CORP
CIK 0000093751
$1.6B16.3M0.05%Q1 202606
Vanguard Portfolio Management
CIK 0002100121· Index
$1.4B14.7M0.07%Q1 202607
WCM INVESTMENT MANAGEMENT, LLC
CIK 0001061186
$1.2B12.6M2.75%Q1 202608
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$1.0B10.6M0.06%Q1 202609
JPMORGAN CHASE & CO
CIK 0000019617
$648M6.8M0.04%Q1 202610
NORTHERN TRUST CORP
CIK 0000073124· Index
$429M4.5M0.06%Q1 202611
MORGAN STANLEY
CIK 0000895421
$409M4.3M0.02%Q1 202612
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$401M4.2M0.08%Q1 202613
Madison Asset Management, LLC
CIK 0001299351
$391M4.1M4.85%Q1 202614
Invesco Ltd.
CIK 0000914208
$390M4.1M0.04%Q1 202615
Allspring Global Investments Holdings, LLC
CIK 0001890906
$347M3.6M0.58%Q1 202616
ROYAL BANK OF CANADA
CIK 0001000275
$339M3.5M0.06%Q1 202617
Polar Capital Holdings Plc
CIK 0001837309
$317M3.3M1.12%Q1 202618
Legal & General Group Plc
CIK 0000764068
$316M3.3M0.07%Q1 202619
PRINCIPAL FINANCIAL GROUP INC
CIK 0001126328
$314M3.3M0.17%Q1 202620
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
CIK 0000861177
$305M3.2M0.06%Q1 2026
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