GENEVA CAPITAL MANAGEMENT LLC

Position in WMS — Advanced Drainage Systems, Inc.

CIK 1009232 MILWAUKEE, WI

Position in WMS

as of Jun 30, 2026 · filed Aug 6, 2026 Compact

Position Value

$38,595,364

+$3,500,644 QoQ

Shares Held

245,893

-3.9% QoQ

Ownership

0.326%

of shares outstanding

% of Portfolio

0.90%

of 13F equity value

Holder Rank

#58

of 543 holders

Holding Since

Dec 2020

23 quarters on record

Voting authority Sole 81% Shared 0% None 19%

Industrials · as of Jun 30, 2026

GENEVA CAPITAL MANAGEMENT LLC holds $309,369,725 across 5 Building Products & Equipment names. WMS ranks #3 (12.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AAON	Aaon, Inc.	1,200,842	$152,338,815
2	SPXC	SPX Technologies, Inc.	304,729	$74,710,408
3	WMS	Advanced Drainage Systems, Inc. This page	245,893	$38,595,364
4	TREX	Trex Co Inc	588,319	$29,439,482
5	LMB	Limbach Holdings, Inc.	185,528	$14,285,656

23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$38,595,364	245,893	-3.9%	Shares	Sole	2026-08-06
2026-03-31	$35,094,720	255,923	-3.2%	Shares	Sole	2026-05-06
2025-12-31	$38,279,292	264,305	+5.3%	Shares	Sole	2026-02-12
2025-09-30	$34,816,750	251,022	-2.5%	Shares	Sole	2025-11-13
2025-06-30	$29,574,037	257,479	+16.5%	Shares	Sole	2025-08-05
2025-03-31	$24,011,865	221,002	+3.4%	Shares	Sole	2025-05-09
2024-12-31	$24,697,939	213,650	+5.7%	Shares	Sole	2025-02-06
2024-09-30	$31,766,435	202,128	+2.9%	Shares	Sole	2024-11-05
2024-06-30	$31,518,398	196,511	+3.5%	Shares	Sole	2024-08-14
2024-03-31	$32,689,773	189,792	-1.6%	Shares	Sole	2024-05-03
2023-12-31	$27,129,314	192,899	-0.2%	Shares	Sole	2024-02-07
2023-09-30	$22,007,094	193,333	-30.6%	Shares	Sole	2023-11-13
2023-06-30	$31,684,998	278,476	-18.6%	Shares	Sole	2023-08-01
2023-03-31	$28,805,967	342,073	+1.6%	Shares	Sole	2023-05-15
2022-12-31	$27,605,363	336,774	-10.4%	Shares	Sole	2023-02-07
2022-09-30	$46,747,822	375,877	-1.8%	Shares	Sole	2022-11-02
2022-06-30	$34,472,400	382,729	-0.8%	Shares	Sole	2022-08-02
2022-03-31	$45,819,195	385,651	-2.3%	Shares	Sole	2022-05-02
2021-12-31	$53,756,511	394,891	-3.2%	Shares	Sole	2022-02-02
2021-09-30	$44,130,222	407,971	-5.0%	Shares	Sole	2021-11-08
2021-06-30	$50,076,373	429,582	+27.1%	Shares	Sole	2021-08-11
2021-03-31	$34,950,368	338,044	+48.5%	Shares	Sole	2021-05-03
2020-12-31	$19,019,714	227,563	—	Shares	Sole	2021-02-02
No filing history on record for this holder in this stock.