WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in ACGL — Arch Capital Group Ltd.

CIK 1644956 CHICAGO, IL

Position in ACGL

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$716,691

+$9,917 QoQ

Shares Held

7,384

+0.3% QoQ

Ownership

0.002%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#487

of 900 holders

Holding Since

Sep 2021

18 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Financial Services · as of Jun 30, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $716,691 across 1 Insurance - Diversified name. ACGL ranks #1 (100.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)	Open
1	ACGL	Arch Capital Group Ltd. This page	7,384	$716,691

18 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$716,691	7,384	+0.3%	Shares	Sole	2026-08-12
2026-03-31	$706,774	7,363	-98.7%	Shares	Sole	2026-05-08
2025-12-31	$56,482,012	588,845	-14.6%	Shares	Sole	2026-02-09
2025-09-30	$62,526,125	689,145	-8.4%	Shares	Sole	2025-11-12
2025-06-30	$68,499,100	752,324	+3.9%	Shares	Sole	2025-07-29
2025-03-31	$69,648,650	724,149	+16.0%	Shares	Sole	2025-05-09
2024-12-31	$57,631,479	624,055	+33.7%	Shares	Sole	2025-02-10
2024-09-30	$52,232,073	466,858	+21952.8%	Shares	Sole	2024-11-08
2024-06-30	$213,584	2,117	-67.5%	Shares	Sole	2024-08-08
2023-09-30	$518,752	6,508	+56.4%	Shares	Sole	2023-11-09
2023-06-30	$311,376	4,160	-0.2%	Shares	Sole	2023-08-11
2023-03-31	$282,950	4,169	-17.1%	Shares	Sole	2023-05-12
2022-12-31	$315,657	5,028	-7.4%	Shares	Sole	2023-02-09
2022-09-30	$247,145	5,427	-19.4%	Shares	Sole	2022-11-09
2022-06-30	$306,329	6,734	-43.9%	Shares	Sole	2022-08-10
2022-03-31	$581,572	12,011	+5.7%	Shares	Sole	2022-05-11
2021-12-31	$505,040	11,362	+15.5%	Shares	Sole	2022-02-14
2021-09-30	$375,729	9,841	—	Shares	Sole	2021-11-10
No filing history on record for this holder in this stock.