WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in AR — ANTERO RESOURCES Corp

CIK 1644956 CHICAGO, IL

Position in AR

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

Position Value

$10,844,977

-$5,484,874 QoQ

Shares Held

308,622

-19.8% QoQ

Ownership

0.100%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

#117

of 618 holders

Holding Since

Mar 2024

10 quarters on record

Voting authority Sole 86% Shared 0% None 14%

Energy · as of Jun 30, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $318,250,132 across 8 Oil & Gas E&P names. AR ranks #6 (3.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CNQ	CANADIAN NATURAL RESOURCES Ltd	3,635,082	$143,585,739
2	VIST	Vista Energy, S.A.B. de C.V.	1,245,598	$79,469,152
3	BKV	BKV Corp	1,194,790	$32,689,454
4	GPOR	Gulfport Energy Corp	156,661	$26,585,371
5	MTDR	Matador Resources Co	492,596	$24,521,428
6	AR	ANTERO RESOURCES Corp This page	308,622	$10,844,977
7	EXE	EXPAND ENERGY Corp	3,168	$288,889
8	PR	Permian Resources Corp	14,401	$265,122

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$10,844,977	308,622	-19.8%	Shares	Sole	2026-08-12
2026-03-31	$16,329,851	384,775	-38.6%	Shares	Sole	2026-05-08
2025-12-31	$21,586,433	626,420	+25.0%	Shares	Sole	2026-02-09
2025-09-30	$16,823,091	501,284	-43.9%	Shares	Sole	2025-11-12
2025-06-30	$35,967,019	892,925	-6.9%	Shares	Sole	2025-07-29
2025-03-31	$38,784,022	959,051	-33.1%	Shares	Sole	2025-05-09
2024-12-31	$50,266,852	1,434,147	+4.3%	Shares	Sole	2025-02-10
2024-09-30	$39,385,384	1,374,708	+3.7%	Shares	Sole	2024-11-08
2024-06-30	$43,262,974	1,325,865	+52.0%	Shares	Sole	2024-08-08
2024-03-31	$25,288,319	872,011	—	Shares	Sole	2024-05-08
No filing history on record for this holder in this stock.