Companies / Advanced Drainage Systems, Inc.

Advanced Drainage Systems, Inc.

NYSE: WMSCIK 1604028HILLIARD, OHads-pipe.com ↗

Financials · FY2026

Revenue$3.05B
Net income$428.77M
Total debt$1.60B
Cash$162.25M
Diluted EPS$5.44
Shares outstanding75.4M

Ownership

75.4M shares outstanding · as of Jul 30, 2026
0.36%Insiders
Ownership
Insiders0.36%274,118
10%+ / strategic103.13%77,764,487
Institutions94.28%71,093,706
Public float0.00%0

Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 3

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Insider% of sharesShares
Barbour D. ScottSee Remarks · Director
0.22%163,607
Cottrill Scott AEVP, CFO AND SECRETARY
0.15%110,511
Martz BretFormerSee Remarks
<0.01%1,951

Institutional holders 549

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HolderValue% of shares
BlackRock, Inc.$1.17B9.91%
Vanguard Group Inc$1.07B9.83%
State Street Corporation$422.80M3.57%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$370.09M3.39%
Impax Asset Management Group plc$299.32M2.74%
Baillie Gifford & Co$280.75M2.72%
First Trust Advisors LP$280.30M2.71%
Morgan Stanley$247.68M2.27%
Pictet Asset Management Holding SA$240.23M2.20%
American Century Companies Inc$219.26M2.01%

Activity

Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).
DateActorActionSecurityValueShares ΔPosition afterImpact
Q1 2026
as of
Norges Bank
13F manager
ExitCommon stock$-156.59M-1.1M
-100.00%
0
high
Q1 2026
as of
Balyasny Asset Management L.P.
13F manager
TrimCommon stock$-62.51M-456K
-99.33%
3,067
<0.01% of shares
high
Q4 2025
as of
Norges Bank
13F manager
AddCommon stock$61.48M+424K
+64.64%
1,081,179
1.43% of shares
high
Q1 2026
as of
CPPIB Crestone Peak Resources Canada Inc.
13F manager
TrimCommon stock$-57.31M-418K
-83.62%
81,881
0.11% of shares
high
Q2 2026
as of
BlackRock, Inc.
13F manager
AddCommon stock$56.20M+358K
+5.03%
7,469,940
9.91% of shares
high
Q1 2026
as of
Adage Capital Partners Gp, L.L.C.
13F manager
AddCommon stock$54.85M+400K
+266.67%
550,000
0.73% of shares
high
Q1 2026
as of
First Trust Advisors LP
13F manager
TrimCommon stock$-51.92M-379K
-15.63%
2,044,057
2.71% of shares
high
Q2 2026
as of
State Street Corporation
13F manager
AddCommon stock$35.20M+224K
+9.08%
2,693,665
3.57% of shares
medium

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Vanguard Group IncPassive13G/A—0—
Delaware Charter Guarantee & Trust CoPassive13G—77,764,487—

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
WMS——00790R104—