$ACGL

$100.34 -$2.00 (1.95%) Close

$ACGL Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 341.2M shares outstanding

Who owns ACGL?

By type of holder

Institutions 91.4% Insiders 0.0% Everyone else 8.6%

Concentration Top 10 holders own 45.5%

BlackRock, Inc. 8.9% · Artisan Partners Limited Partnership 6.3%

Institutional ownership

91.4%

-1.8 pts vs last qtr

Institutional holders

903

-12 vs last qtr

Net shares bought

−6.1M

by institutions in Q2 2026

New / sold out

107 / 119

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +4.7M
Arrowstreet Capital, Limited Partnership +2.6M

Biggest sellers in Q2 2026

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC −3.1M
First Trust Advisors LP −2.2M

Who is planning to sell?

Notices of proposed sale, last 12 months

$46.9M

10 notices from 6 people

Shares covered

484.6K

0.14% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Gansberg David Former affiliate $19.5M
Pasquesi John M Director $17.3M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+0.5%

+0.05% a year

Each share's claim on the business

−0.5%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$4.18B vs $868M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years76% 3–5 years9% 1–3 years8% Under 1 year6%

Quarterly turnover

7.2%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ACGL on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	30.2M	8.86%	−1.1M (−3.6%)	≤2021	0.0%
Shares held by quarter Peak holding33.4M (Q1'25) Change over 8 quarters−3.1M Share of the company8.860% BlackRock, Inc.'s full portfolio →
AP Artisan Partners Limited Partnership	21.6M	6.33%	−1.1M (−4.7%)	≤2021	3.3%
Shares held by quarter Peak holding23.8M (Q2'25) Change over 8 quarters−2.1M Share of the company6.330% Artisan Partners Limited Partnership's full portfolio →

BlackRock, Inc.

30.2M

% of company

8.86%

Change vs last qtr

−1.1M (−3.6%)

Held since

≤2021

Artisan Partners Limited Partnership

21.6M

% of company

6.33%

Change vs last qtr

−1.1M (−4.7%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Arch Capital Group Ltd., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ACGL on Form N-PORT; together they hold 18.7% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$1.02B	10.5M	3.09%	0.04%	June 30, 2026
V5 Vanguard 500 Index Fund Vanguard Index Funds	$875M	9.0M	2.64%	0.05%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$1.02B

% of company

3.09%

% of the fund

0.04%

As of

June 30, 2026

Vanguard 500 Index Fund

Vanguard Index Funds

Position value

$875M

% of company

2.64%

% of the fund

0.05%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Arch Capital Group Ltd. and how much of the fund the position is.

Comments