Advanced Drainage Systems, Inc. (WMS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

78,677,311Shares Outstanding

1,295,045Shares held by institutions

$221,154,835Value of institutional holdings

87.64%Institutional ownership %

-2.18%Shares Changed QoQ

508No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

According to SEC filings for the period ending December 2025, Advanced Drainage Systems, Inc. (NYSE:WMS) is held by 508 institutional firms.

Institutional ownership in Advanced Drainage Systems edged down to 87.6% in December 2025, compared to 93.4% in September 2025.
On a quarter-over-quarter basis, institutional holdings shifted by -2.18%, with a year-over-year an increase of 11.89% in the count of filers.
Of these 508 institutional investors, 236 increased their holdings in Advanced Drainage Systems, while 196 of them reduced positions, and 76 investors maintained their exposure.
The total number of shares held by institutions in Advanced Drainage Systems decreased to 68.95Mn as of December 2025, a net change of down by 1.54Mn shares quarter on quarter, and up 2.20Mn shares year over year.
As of December 31, 2025, VANGUARD GROUP INC held Advanced Drainage Systems's largest shareholding position with over 7.41Mn shares, representing 9.42% of total outstanding shares.
Among the most significant buyers of Advanced Drainage Systems during December 2025 were NORGES BANK (1.08Mn), Amundi (572.19K), BALYASNY ASSET MANAGEMENT L.P. (411.88K), CITADEL ADVISORS LLC (241.49K), Qube Research & Technologies Ltd (202.88K).
Leading sellers of Advanced Drainage Systems stock in December 2025 included Interval Partners, LP (747.97K), Liontrust Investment Partners LLP (714.25K), Impax Asset Management Group plc (433.35K), Pictet Asset Management Holding SA (412.89K), T. Rowe Price Investment Management, Inc. (326.33K).
The top 10 institutional holders of Advanced Drainage Systems for the quarter ending December 2025 included VANGUARD GROUP INC (7.41Mn), BlackRock, Inc. (7.11Mn), UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC (2.56Mn), STATE STREET CORP (2.47Mn), FIRST TRUST ADVISORS LP (2.42Mn), BAILLIE GIFFORD & CO (2.24Mn), Impax Asset Management Group plc (2.07Mn), MORGAN STANLEY (1.71Mn), Pictet Asset Management Holding SA (1.66Mn), AMERICAN CENTURY COMPANIES INC (1.51Mn).

508 Institutional Holders

1,295,045 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	7,410,388	-70,393	-0.94%	$1,073,246,494.00
BlackRock, Inc.	31 Dec, 2025	7,111,917	69,022	0.98%	$1,030,018,922.00
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	31 Dec, 2025	2,555,361	-256,473	-9.12%	$370,092,934.00
STATE STREET CORP	31 Dec, 2025	2,469,430	-82,471	-3.23%	$357,647,547.00
FIRST TRUST ADVISORS LP	31 Dec, 2025	2,422,676	5,734	0.24%	$350,876,227.00
BAILLIE GIFFORD & CO	31 Dec, 2025	2,244,014	-151,057	-6.31%	$325,000,548.00
Impax Asset Management Group plc	31 Dec, 2025	2,066,723	-433,353	-17.33%	$299,323,492.00
MORGAN STANLEY	31 Dec, 2025	1,710,126	-290,887	-14.54%	$247,678,015.00
Pictet Asset Management Holding SA	31 Dec, 2025	1,658,503	-412,895	-19.93%	$240,227,327.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	1,513,938	41,762	2.84%	$219,263,641.00
Impactive Capital LP	31 Dec, 2025	1,457,746	-206,253	-12.40%	$211,125,353.00
Amundi	31 Dec, 2025	1,279,576	572,193	80.89%	$185,324,306.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,271,453	15,069	1.20%	$184,183,563.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	1,264,156	75,250	6.33%	$183,087,712.00
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC	31 Dec, 2025	1,190,619	-67,645	-5.38%	$172,437,387.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	1,189,064	50,686	4.45%	$172,224,082.00
NORGES BANK	31 Dec, 2025	1,081,179	1,081,179	0.00%	$156,587,155.00
Capital International Investors	31 Dec, 2025	936,239	2,388	0.26%	$135,595,494.00
KBC Group NV	31 Dec, 2025	902,066	-8,026	-0.88%	$130,646.00
CITADEL ADVISORS LLC	31 Dec, 2025	862,695	241,493	38.88%	$124,944,117.00

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