WMS

Advanced Drainage Systems In
MaterialsUSCUSIP 00790R104◍ Confluence graph
Tracked 13F Holders
486
-232 QoQ
13F Value (tracked)
$8.8B
Insider Net · 180d
$0
0↑ 0↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)36 adding · 22 trimming
Insider net (180d)$0

Who owns WMS?

486 tracked 13F filers

486 tracked 13F filers disclose a position in WMS as of the latest SEC 13F filings, a combined $8.8B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
3 source-reported value rows are withheld because the reported units do not agree with same-security peers. Share counts remain visible and unchanged.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$1.0B
7.4M
+4.4%
Added · +311K sh
Q1 2026
2VANGUARD PORTFOLIO MANAGEMENT LLC
$495.8M
3.6M
First observed position
No prior filed position
Q1 2026
3VANGUARD CAPITAL MANAGEMENT LLC
$469.5M
3.4M
First observed position
No prior filed position
Q1 2026
4STATE STREET CORP
$422.8M
2.7M
+8.2%
Added · +204K sh
Q2 2026
5UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME
$336.0M
2.5M
−4.1%
Reduced · −105K sh
Q1 2026
6Pictet Asset Management Holding SA
$302.3M
2.2M
+33%
Added · +546K sh
Q1 2026
7BAILLIE GIFFORD & CO
$280.8M
2.0M
−8.8%
Reduced · −197K sh
Q1 2026
8FIRST TRUST ADVISORS LP
$280.3M
2.0M
−16%
Reduced · −379K sh
Q1 2026
9Impax Asset Management Group plc
$289.7M
1.8M
−4.2%
Reduced · −82K sh
Q2 2026
10AMERICAN CENTURY COMPANIES INC
$227.3M
1.7M
+9.5%
Added · +144K sh
Q1 2026
11GEODE CAPITAL MANAGEMENT, LLC
$214.7M
1.4M
+1.7%
Added · +23K sh
Q2 2026
12MORGAN STANLEY
$182.8M
1.3M
−22%
Reduced · −377K sh
Q1 2026
13Amundi
$176.7M
1.3M
+0.7%
Added · +9K sh
Q1 2026
14DIMENSIONAL FUND ADVISORS LP
$163.4M
1.2M
+0.2%
Added · +3K sh
Q1 2026
15KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC
$151.7M
1.1M
−7.1%
Reduced · −84K sh
Q1 2026
16NORGES BANK
$156.6M
1.1M
+36%
Added · +289K sh
Q4 2025
17Impactive Capital LP
$117.5M
856K
−41%
Reduced · −601K sh
Q1 2026
18CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$96.4M
703K
−2.1%
Reduced · −15K sh
Q1 2026
19Mirova US LLC
$97.2M
619K
−1.5%
Reduced · −10K sh
Q2 2026
20JANUS HENDERSON GROUP PLC
$81.3M
593K
−1.0%
Reduced · −6K sh
Q1 2026
21NORTHERN TRUST CORP
$80.8M
589K
+1.0%
Added · +6K sh
Q1 2026
22MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
$80.3M
586K
+8.1%
Added · +44K sh
Q1 2026
23Liontrust Investment Partners LLP
$87.7M
559K
+6.5%
Added · +34K sh
Q2 2026
24WESTWOOD HOLDINGS GROUP INC
$75.9M
553K
+29%
Added · +124K sh
Q1 2026
25ADAGE CAPITAL PARTNERS GP, L.L.C.
$75.4M
550K
+267%
Added · +400K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is WMS being bought or sold by institutions?

Last quarter, 3 funds opened a new position in WMS and 33 added to an existing one, while 22 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
3
funds
Added
33
funds
Reduced
22
funds
Exited
0
funds

Funds that own WMS also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT276 funds$299.8B
NVIDIA CORPNVDA274 funds$426.9B
AMAZON.COM INCAMZN273 funds$223.0B
ALPHABET INC-CL AGOOGL272 funds$187.8B
VISA INC-CLASS A SHARESV270 funds$71.3B
BROADCOM INCAVGO269 funds$167.3B
APPLE INCAAPL268 funds$314.7B
META PLATFORMS INC-CLASS AMETA267 funds$126.4B
JPMORGAN CHASE & COJPM266 funds$70.2B
ELI LILLY & COLLY261 funds$79.9B
MASTERCARD INC - AMA261 funds$61.2B
PROCTER & GAMBLE CO/THEPG259 funds$30.9B

Ranked by how many of WMS's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$0
0 insiders
Net
$0
0 P/S txns
Signal
Mixed
open-market
DateInsiderRoleActionSharesValue
Dec 3, 2025EVERSOLE ROBERT MDirectorSell (S)11K$1.6M
Nov 26, 2025WAUN THOMAS J. SR.EVP, InternationalSell (S)2K$233K
Nov 12, 2025MAKOWSKI TIM ASee RemarksSell (S)5K$716K
Nov 12, 2025MAKOWSKI TIM ASee RemarksSell (S)101$15K
Nov 12, 2025BARBOUR D. SCOTTSee Remarks, DirectorSell (S)2K$306K
Nov 12, 2025BARBOUR D. SCOTTSee Remarks, DirectorSell (S)73K$10.9M
Nov 12, 2025BARBOUR D. SCOTTSee Remarks, DirectorSell (S)5K$672K
Nov 12, 2025WAUN THOMAS J. SR.EVP, InternationalSell (S)1K$150K
Nov 11, 2025WAUN THOMAS J. SR.EVP, InternationalSell (S)1K$189K
Jun 9, 2025HARVEY DARIN S.EVP, Supply Chain & LogisticsSell (S)4K$520K
Feb 19, 2025HARVEY DARIN S.EVP, Supply Chain & LogisticsSell (S)1K$186K
Feb 19, 2025HARVEY DARIN S.EVP, Supply Chain & LogisticsSell (S)976$122K

Institutional ownership over time

250 funds-113 since Q3 2024
0241482Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $2.0B · 1 values withheld

Recent filings

15 shown

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Connected entities for WMS

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Ask your agent what changed in WMS

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/WMS/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for WMS.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for WMS. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.