Stock Ownership/ARCH CAP GROUP LTD

ARCH CAP GROUP LTD: Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in ARCH CAP GROUP LTD. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
23
13F filers
Aggregate Value
$921.9M
Across holders
Last Price
—
EOD close
Sector
—
GICS
Institutional Holders of ARCH CAP GROUP LTD
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23 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund4.49M$436.2M47.3%0.2%Added+$250.8MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund1.35M$131.4M14.3%0.0%Added+$130.2MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund787K$76.4M8.3%0.1%Reduced$-47.2MQ2 2026
Clearbridge Investments, LLC
CIK 0001348883
Hedge Fund705K$68.4M7.4%0.1%Added+$34.9MQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund416K$40.4M4.4%0.1%Added$-35.7MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund306K$29.7M3.2%0.0%Reduced$-12.1MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund272K$26.4M2.9%0.0%Added+$23.5MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund229K$22.2M2.4%0.0%Added+$21.3MQ2 2026
Bridgewater Associates, LP
CIK 0001350694
Hedge Fund224K$21.7M2.4%0.1%Reduced$-2.2MQ2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
Hedge Fund160K$15.5M1.7%0.0%Reduced$-3.4MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$436.2M· 47.3% of total· 0.2% port· 4.49M sh· +$250.8M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$131.4M· 14.3% of total· 0.0% port· 1.35M sh· +$130.2M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$76.4M· 8.3% of total· 0.1% port· 787K sh· $-47.2M QoQ· Q2 2026
Clearbridge Investments, LLCAdded
Hedge Fund
$68.4M· 7.4% of total· 0.1% port· 705K sh· +$34.9M QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$40.4M· 4.4% of total· 0.1% port· 416K sh· $-35.7M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$29.7M· 3.2% of total· 0.0% port· 306K sh· $-12.1M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$26.4M· 2.9% of total· 0.0% port· 272K sh· +$23.5M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$22.2M· 2.4% of total· 0.0% port· 229K sh· +$21.3M QoQ· Q2 2026
Bridgewater Associates, LPReduced
Hedge Fund
$21.7M· 2.4% of total· 0.1% port· 224K sh· $-2.2M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Reduced
Hedge Fund
$15.5M· 1.7% of total· 0.0% port· 160K sh· $-3.4M QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$15.4M· 1.7% of total· 0.0% port· 158K sh· +$8.6M QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCAdded
Institutional Manager
$15.2M· 1.6% of total· 0.0% port· 156K sh· +$3.9M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$10.5M· 1.1% of total· 0.0% port· 109K sh· +$2.9M QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$6.1M· 0.7% of total· 0.0% port· 63K sh· $-6.5M QoQ· Q2 2026
ExodusPoint Capital Management, LPNew
Hedge Fund
$2.1M· 0.2% of total· 0.0% port· 21K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$1.2M· 0.1% of total· 0.0% port· 13K sh· $-3.8M QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$878K· 0.1% of total· 0.0% port· 9K sh· +$500K QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$766K· 0.1% of total· 0.0% port· 8K sh· +$248K QoQ· Q2 2026
TCW GROUP INCReduced
Hedge Fund
$649K· 0.1% of total· 0.0% port· 7K sh· $-5K QoQ· Q2 2026
Ancora Advisors, LLCReduced
Hedge Fund
$257K· 0.0% of total· 0.0% port· 3K sh· $-45K QoQ· Q2 2026
Eisler Capital (UK) Ltd.New
Hedge Fund
$238K· 0.0% of total· 0.0% port· 2K sh· — QoQ· Q3 2024
Fisher Asset Management, LLCNew
Institutional Manager
$214K· 0.0% of total· 0.0% port· 2K sh· — QoQ· Q2 2026
Walleye Capital LLCReduced
Hedge Fund
$21K· 0.0% of total· 0.0% port· 215 sh· $-358K QoQ· Q2 2026
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