Impax Asset Management Group plc

CIK

1749768

City

LONDON

State / Country

Stock

WMS — Advanced Drainage Systems, Inc.

Top Portfolio Positions

284 positions · $14,253,140,079 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
LIN	Linde PLC Basic Materials	1,711,780	$848,632,052	5.95%
NVDA	Nvidia Corp Technology	3,641,085	$635,005,224	4.46%
XYL	Xylem Inc. Industrials	4,585,548	$547,972,986	3.84%
KLAC	Kla Corp Technology	363,789	$535,646,561	3.76%
MSFT	Microsoft Corp Technology	1,188,887	$440,090,300	3.09%
AWK	American Water Works Company, Inc. Utilities	2,817,225	$383,396,150	2.69%
WCN	Waste Connections, Inc. Industrials	2,117,425	$343,954,517	2.41%
HUBB	Hubbell Inc Industrials	682,761	$335,058,133	2.35%
APTV	Aptiv PLC Consumer Cyclical	4,591,538	$318,836,398	2.24%
VLTO	Veralto Corp Industrials	3,376,097	$298,514,496	2.09%

Portfolio Trend

25 quarters · across all stocks

Holdings in WMS

Compact Export CSV

Shares Held

Position Value (USD)

25 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$264,319,446	1,927,510	-6.7%	Shares	Defined	2026-05-12
2025-12-31	$299,323,492	2,066,723	-17.3%	Shares	Defined	2026-01-29
2025-09-30	$346,760,541	2,500,076	-17.9%	Shares	Defined	2025-11-06
2025-06-30	$349,623,387	3,043,909	+4.8%	Shares	Defined	2025-08-08
2025-03-31	$315,564,581	2,904,414	+14.8%	Shares	Defined	2025-04-29
2024-12-31	$292,468,000	2,530,000	+34.6%	Shares	Defined	2025-02-04
2024-09-30	$295,452,627	1,879,948	-9.5%	Shares	Defined	2024-11-06
2024-06-30	$333,013,907	2,076,276	-12.7%	Shares	Defined	2024-11-08
2024-03-31	$409,669,739	2,378,482	-12.1%	Shares	Defined	2024-04-30
2023-12-31	$380,671,131	2,706,706	-10.2%	Shares	Defined	2024-01-26
2023-09-30	$343,281,115	3,015,735	-13.5%	Shares	Defined	2023-11-07
2023-06-30	$396,819,924	3,487,607	-1.5%	Shares	Defined	2023-08-07
2023-03-31	$298,290,346	3,542,220	+26.4%	Shares	Defined	2023-05-10
2022-12-31	$229,682,071	2,802,026	+12.0%	Shares	Defined	2023-02-09
2022-09-30	$311,153,467	2,501,837	-10.1%	Shares	Defined	2022-11-08
2022-06-30	$250,795,951	2,784,456	-0.4%	Shares	Defined	2022-08-11
2022-03-31	$332,265,709	2,796,614	+0.6%	Shares	Defined	2022-05-16
2021-12-31	$378,555,204	2,780,836	-6.6%	Shares	Defined	2022-02-14
2021-09-30	$321,993,641	2,976,737	+10.1%	Shares	Defined	2021-11-12
2021-06-30	$315,134,638	2,703,394	+2.1%	Shares	Defined	2021-08-05
2021-03-31	$273,641,589	2,646,693	-8.2%	Shares	Defined	2021-05-14
2020-12-31	$241,015,299	2,883,648	-3.0%	Shares	Defined	2021-02-16
2020-09-30	$185,589,163	2,972,280	-5.3%	Shares	Defined	2020-11-12
2020-06-30	$155,005,146	3,137,756	+5.0%	Shares	Defined	2020-08-14
2020-03-31	$88,005,433	2,989,315	—	Shares	Defined	2020-05-15
No 13F history on record for this holder in this stock.