Arch Capital Group

ACGL and ACGLN • NASDAQ

Arch Capital Group is a insurance - diversified company in the financial services sector on NASDAQ, led by Nicolas Alain Emmanuel Papadopoulo, with a market cap of $33.0B. As of Q3 2025, 87% of shares are held by 820 institutional investors, with VANGUARD GROUP INC as the largest holder at 11.34%.

CEONicolas Alain Emmanuel Papadopoulo

Market Cap$33.0B

Insurance - Diversified

Financial Services

Employees5.8K

Websitearchgroup.com

Country

United States of America

Overview

Overview of institutional ownership in ACGL and ACGLN as of Q3 2025 with a market cap of $33.9B

All Institutions

Institutions: 820
Value Held: $29.5B
Shares Held: 324.9M
Avg Position: $35.8M
Median Position: $977.2K

Hedge Funds

Hedge Funds: 58
Value Held: $1.2B
Shares Held: 13.3M
Avg Position: $20.8M
Median Position: $3.0M

Ownership Breakdown

Institutional (non-HF)

83.45%

$28.3B

Hedge Funds

3.57%

$1.2B

Retail & Other

12.98%

$4.4B

Based on market cap of $33.9B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in ACGL and ACGLN as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
VANGUARD GROUP INC Institution	Salim Ramji CEO	$3.8B 0.06% of portfolio	11.34% 42.3M shares	≤ Q2 2013 Held for 12y 6m+	$6.69T
BlackRock, Inc. Institution	Laurence D. Fink CEO	$2.9B 0.05% of portfolio	8.70% 32.5M shares	≤ Q2 2013 Held for 12y 6m+	$5.67T
Artisan Partners Limited Partnership Long Only Manager	Eric Richard Colson CEO	$2.1B 3.08% of portfolio	6.33% 23.6M shares	≤ Q2 2013 Held for 12y 6m+	$69.5B
BAMCO INC /NY/ Long Only Manager	Ronald Stephen Baron CEO	$1.7B 4.52% of portfolio	5.03% 18.8M shares	≤ Q2 2013 Held for 12y 6m+	$37.7B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$1.5B 0.05% of portfolio	4.49% 16.8M shares	≤ Q2 2013 Held for 12y 6m+	$2.88T
WCM INVESTMENT MANAGEMENT/CA Long Only Manager	Paul Russell Black CEO	$1.2B 2.53% of portfolio	3.62% 13.5M shares	Q1 2023 Held for 2y 9m	$48.1B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$966.6M 0.06% of portfolio	2.87% 10.7M shares	≤ Q2 2013 Held for 12y 6m+	$1.57T
JPMORGAN CHASE & CO Institution	Jamie Dimon CEO	$743.2M 0.05% of portfolio	2.19% 8.2M shares	≤ Q2 2013 Held for 12y 6m+	$1.56T
PRINCIPAL FINANCIAL GROUP INC Institution	Deanna Strable CEO	$467.1M 0.24% of portfolio	1.38% 5.1M shares	≤ Q2 2013 Held for 12y 6m+	$197.71B
NORTHERN TRUST CORP Institution	Michael G. O'Grady CEO	$442.2M 0.06% of portfolio	1.31% 4.9M shares	≤ Q2 2013 Held for 12y 6m+	$782.03B

Net Capital Flow

Institutional buying and selling activity for ACGL and ACGLN in Q3 2025

Traded: −$352.8M
Buyers: 401
Sellers: 404
Total Bought: +$1.8B
Total Sold: −$2.1B
Avg Position: $32.5M

Biggest Buyers

Institution	Net Bought	Current Position
COOKE & BIELER LP Long Only Manager	+$210.9M +2.3M shares	$210.9M 2.3M shares
FIRST TRUST ADVISORS LP ETF Provider	+$206.8M +2.3M shares	$257.3M 2.8M shares
M MANUFACTURERES LIFE INSURANCE CO Institution	+$162.1M +1.8M shares	$182.0M 2.0M shares
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	+$91.0M +1.0M shares	$172.0M 1.9M shares
UBS Group AG Institution	+$89.6M +987.4K shares	$248.5M 2.7M shares
Marshall Wace LLP Institution	+$82.7M +911.0K shares	$84.8M 934.3K shares
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	+$58.7M +646.9K shares	$99.7M 1.1M shares
S Swedbank AB Institution	+$57.8M +637.3K shares	$172.3M 1.9M shares
$DEUTSCHE BANK AG\ logo$ DEUTSCHE BANK AG\ Institution	+$46.8M +516.0K shares	$211.9M 2.3M shares
R Robeco Institutional Asset Management B.V. Institution	+$46.5M +512.9K shares	$93.4M 1.0M shares

Biggest Sellers

Institution	Net Sold	Current Position
C Capital International Investors Institution	−$599.9M −6.6M shares	$171.6M 1.9M shares
N Nuveen, LLC Institution	−$129.8M −1.4M shares	$232.5M 2.6M shares
BAMCO INC /NY/ Long Only Manager	−$87.8M −967.6K shares	$1.7B 18.8M shares
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager	−$86.7M −955.7K shares	$302.2M 3.3M shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$83.7M −922.5K shares	$83.6M 921.9K shares
Allspring Global Investments Holdings, LLC Long Only Manager	−$68.8M −761.9K shares	$340.6M 3.8M shares
Egerton Capital LLP Hedge Fund•Long/Short	−$66.5M −733.1K shares	$318.3M 3.5M shares
PRINCIPAL FINANCIAL GROUP INC Institution	−$62.4M −687.4K shares	$467.1M 5.1M shares
AMERIPRISE FINANCIAL INC Institution	−$58.2M −642.0K shares	$65.9M 726.6K shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	−$52.1M −574.7K shares	$9.8M 107.8K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited ACGL and ACGLN in Q3 2025

New Positions: 43
New Value: $14.6M
Exited Positions: 87
Exited Value: $109.5M

New Positions

Institution	Position Value
H HEARTLAND ADVISORS INC Long Only Manager	$8.0M 87.7K shares
IMC-Chicago, LLC RIA/Wealth	$1.1M 12.1K shares
T TEMA ETFS LLC Institution	$625.3K 6.9K shares
FIRST HORIZON NATIONAL CORP RIA/Wealth	$577.0K 6.4K shares
Brookwood Investment Group LLC RIA/Wealth	$523.2K 5.8K shares
Board of the Pension Protection Fund RIA/Wealth	$408.3K 4.5K shares
CBOE Vest Financial, LLC ETF Provider	$327.0K 3.6K shares
PROFFITT & GOODSON INC RIA/Wealth	$320.8K 3.5K shares
Magnus Financial Group LLC RIA/Wealth	$297.5K 3.3K shares
Catalytic Wealth RIA, LLC RIA/Wealth	$290.4K 3.2K shares

Exited Positions

Institution	Previous Position
Soundwatch Capital LLC ETF Provider	$13.4M 21.7K shares
C Capitolis Liquid Global Markets LLC Private Equity	$6.9M 75.6K shares
LEUCADIA NATIONAL CORP Institution	$6.6M 72.7K shares
Kingstone Capital Partners Texas, LLC RIA/Wealth	$6.3M 68.7K shares
T TCW GROUP INC Institution	$6.2M 68.6K shares
C CAPITAL INTERNATIONAL LTD /CA/ Institution	$4.8M 52.4K shares
T TEXAS PERMANENT SCHOOL FUND Institution	$3.9M 42.5K shares
LEUTHOLD WEEDEN CAPITAL MANAGEMENT Long Only Manager	$3.2M 35.2K shares
Edgestream Partners, L.P. Hedge Fund•Quant Macro	$3.1M 34.5K shares
Engineers Gate Manager LP Hedge Fund•Quant	$3.0M 33.1K shares

Options Activity

Institutions with the largest Call and Put options positions in ACGL and ACGLN as of Q3 2025

Call Positions: 8
Call Value: $11.0M
Put Positions: 8
Put Value: $9.8M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$5.0M 548.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$3.3M 359.0 contracts
J JANE STREET GROUP, LLC Institution	$1.5M 168.0 contracts
W WOLVERINE TRADING, LLC Institution	$862.4K 96.0 contracts
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy	$372.0K 41.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$27.2K 3.0 contracts
P PUFF WEALTH MANAGEMENT, LLC Institution	- - contracts
Walleye Trading LLC RIA/Wealth	- - contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$7.2M 795.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$707.7K 78.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$598.8K 66.0 contracts
W WOLVERINE TRADING, LLC Institution	$592.9K 66.0 contracts
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy	$281.3K 31.0 contracts
J JANE STREET GROUP, LLC Institution	$226.8K 25.0 contracts
Walleye Trading LLC RIA/Wealth	$226.8K 25.0 contracts
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	- - contracts

Most Committed Institutions

Institutions with ACGL and ACGLN as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
H High Ground Investment Management LLP Institution	-	25.85% $155.6M	0.46% 1.7M shares	Q4 2023 Held for 2 years	$601.9M
Philo Smith Capital Corp Hedge Fund•Sector	Michele Corridor Ogrady President	7.28% $26.1M	0.08% 287.6K shares	Q3 2021 Held for 4y 3m	$358.4M
G Gladstone Capital Management LLP RIA/Wealth	Bonnie Mills Smallwood Partner	6.49% $59.4M	0.18% 655.0K shares	Q1 2023 Held for 2y 9m	$915.5M
Robertson Opportunity Capital, LLC Hedge Fund•Long/Short	James Brett Robertson President	5.59% $18.3M	0.05% 202.1K shares	≤ Q2 2013 Held for 12y 6m+	$328.2M
Maren Capital LLC Long Only Manager	Bradley Carl Schatz CEO	5.54% $99.5M	0.29% 1.1M shares	Q4 2024 Held for 1 year	$1.8B
STEINBERG ASSET MANAGEMENT LLC Long Only Manager	Michael Alan Steinberg Managing Partner	4.92% $6.9M	0.02% 75.5K shares	≤ Q2 2013 Held for 12y 6m+	$139.2M
Madison Asset Management, LLC Long Only Manager	Steven Allan Carl Chairman	4.72% $427.2M	1.26% 4.7M shares	Q4 2019 Held for 6 years	$9.1B
BAMCO INC /NY/ Long Only Manager	Ronald Stephen Baron CEO	4.52% $1.7B	5.03% 18.8M shares	≤ Q2 2013 Held for 12y 6m+	$37.7B
MARSHFIELD ASSOCIATES Long Only Manager	Jarron Hampton Smith COO	4.28% $247.2M	0.73% 2.7M shares	≤ Q2 2013 Held for 12y 6m+	$5.8B
RIPOSTE CAPITAL LLC Hedge Fund•Long/Short	Jay Clifton Plourde CCO	3.90% $6.4M	0.02% 70.0K shares	Q1 2025 Held for 9 months	$162.9M

Hedge Fund Spotlight

Discover hedge funds investing in ACGL and ACGLN

New Age Alpha Advisors, LLC

Hedge Fund • Multi-Strategy

Portfolio ManagerArmen Raphael Arus

Portfolio Value: $2.4B
Positions: 799
Last Reported: Q3 2025

Sector Allocation

Position in Arch Capital Group

ACGL and ACGLN

Market Value: $3.5M
Shares Held: 38.3K
Portfolio Weight: 0.15%
Owned Since: 2024-Q4

Top Holding	Sector	Market Value	Weight
1 Microsoft MSFT	Software - Infrastructure Technology	$87.3M	3.67%
2 Apple AAPL	Consumer Electronics Technology	$74.1M	3.11%
3 Nvidia NVDA	Semiconductors Technology	$68.8M	2.89%