WMS · Advanced Drainage Systems, Inc. · Shareholders & Ownership
Every disclosed holder of WMS in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns WMS
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 69,555,872 | 92.24% |
| Insiders (Forms 3, 4, 5) | 904,281 | 1.20% |
| 13D/G-only blocks | 0 | 0.00% |
| Remaining | 4,945,189 | 6.56% |
| Registered funds (N-PORT, not summed) | 28,233,419 | 37.44% |
Shares outstanding: 75,405,342, the issuer's latest cover-page count restated onto today's split basis.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of WMS
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,469,940 | ||
| 1.1 |
iShares Core S&P Mid-Cap ETF
Fund
S000004307 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
2,452,492 | ||
| 1.2 |
iShares Russell Mid-Cap ETF
Fund
S000004338 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
301,420 | ||
| 1.3 |
iShares S&P Mid-Cap 400 Growth ETF
Fund
S000004308 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
240,394 | ||
| 1.4 |
iShares Russell 1000 Value ETF
Fund
S000004345 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
161,062 | ||
| 1.5 |
iShares S&P Mid-Cap 400 Value ETF
Fund
S000004309 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
158,532 | ||
| 2 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,705,538 | ||
| 3 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,397,037 | ||
| 4 |
|
2,693,665 | ||
| 4.1 |
State Street(R) SPDR(R) S&P(R) Homebuilders ETF
Fund
S000010019 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
373,270 | ||
| 4.2 |
State Street(R) SPDR(R) Portfolio S&P 400(TM) Mid Cap ETF
Fund
S000006986 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
362,763 | ||
| 4.3 |
State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF
Fund
S000006987 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
62,086 | ||
| 4.4 |
State Street(R) SPDR(R) S & P 400(TM) Mid Cap Value ETF
Fund
S000006988 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
48,454 | ||
| 4.5 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
25,086 | ||
| 5 |
FIRST TRUST ADVISORS LP
13F
CIK 1125816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,660,753 | ||
| 5.1 |
First Trust Water ETF
Fund
S000017178 · Registered fund · Jun 30, 2026
First Trust Exchange-Traded Fund, not summed
|
392,822 | ||
| 5.2 |
FT Vest SMID Rising Dividend Achievers Target Income ETF
Fund
S000081275 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded Fund IV, not summed
|
34,810 | ||
| 5.3 |
First Trust Long/Short Equity ETF
Fund
S000045700 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded Fund III, not summed
|
26,136 | ||
| 5.4 |
First Trust Industrials/Producer Durables AlphaDEX Fund
Fund
S000017701 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
21,178 | ||
| 5.5 |
First Trust Mid Cap Core AlphaDEX Fund
Fund
S000017338 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
13,126 | ||
| 6 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
2,431,878 | ||
| 7 |
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
13F
CIK 861177 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,346,623 | ||
| 7.1 |
UBS U.S. Allocation Fund
Fund
S000002487 · Registered fund · May 31, 2026
UBS INVESTMENT TRUST, not summed
|
4,806 | ||
| 7.2 |
UBS Engage For Impact Fund
Fund
S000063381 · Registered fund · Mar 31, 2026
UBS FUNDS, not summed
|
4,102 | ||
| 7.3 |
UBS GLOBAL ALLOCATION FUND
Fund
S000002979 · Registered fund · Jun 30, 2026
UBS FUNDS, not summed
|
1,612 | ||
| 8 |
Impax Asset Management Group plc
13F
CIK 1749768 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,845,942 | ||
| 9 |
BAILLIE GIFFORD & CO
13F
CIK 1088875 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,835,297 | ||
| 10 |
VANGUARD SMALL-CAP INDEX FUND
Fund
S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,755,643 | ||
| 11 |
First Trust RBA American Industrial Renaissance ETF
Fund
S000044209 · Registered fund · Jun 30, 2026
First Trust Exchange-Traded Fund VI, not summed
|
1,677,118 | ||
| 12 |
AMERICAN CENTURY COMPANIES INC
13F
CIK 748054 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,634,302 | ||
| 12.1 |
Ultra Fund
Fund
S000006195 · Registered fund · Jul 31, 2026
American Century Mutual Funds, Inc., not summed
|
977,000 | ||
| 13 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,393,836 | ||
| 13.1 |
E*TRADE No Fee Total Market Index Fund
Fund
S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
|
75 | ||
| 14 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,367,443 | ||
| 15 |
Amundi
13F
CIK 1330387 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,354,610 | ||
| 15.1 |
KBI GLOBAL INVESTORS AQUARIUS FUND
Fund
S000063187 · Registered fund · Jul 31, 2026
ADVISORS' INNER CIRCLE III, not summed
|
7,370 | ||
| 16 |
NORGES BANK
13F
CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,303,735 | ||
| 17 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,277,818 | ||
| 17.1 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
197,747 | ||
| 17.2 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
188,989 | ||
| 17.3 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
156,423 | ||
| 17.4 |
U.S. CORE EQUITY 1 PORTFOLIO
Fund
S000000979 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
119,804 | ||
| 17.5 |
U.S. CORE EQUITY 2 PORTFOLIO
Fund
S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
119,635 | ||
| 18 |
Pictet Asset Management Holding SA
13F
CIK 1993888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,127,974 | ||
| 19 |
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC
13F
CIK 1021223 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,035,255 | ||
| 20 |
VANGUARD SMALL-CAP GROWTH INDEX FUND
Fund
S000002846 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,012,102 | ||
| 21 |
|
923,696 | ||
| 22 |
SMALLCAP World Fund Inc
Fund
S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
|
884,282 | ||
| 23 |
WELLINGTON MANAGEMENT GROUP LLP
13F
CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
840,488 | ||
| 24 |
Qube Research & Technologies Ltd
13F
CIK 1729829 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
839,820 | ||
| 25 |
Invesco Ltd.
13F
CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
835,672 | ||
| 25.1 |
Invesco Water Resources ETF
Fund
S000003048 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
410,998 | ||
| 25.2 |
Invesco S&P Global Water Index ETF
Fund
S000060819 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
|
253,753 | ||
| 25.3 |
Invesco MSCI Sustainable Future ETF
Fund
S000013122 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
13,813 | ||
| 25.4 |
Invesco S&P Midcap 400 QVM Multi-Factor ETF
Fund
S000072319 · Registered fund · May 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
|
10,401 | ||
| 25.5 |
Invesco RAFI US 1000 ETF
Fund
S000011995 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
10,311 | ||
| 26 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
821,587 | ||
| 27 |
Impactive Capital LP
13F
CIK 1786767 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
782,790 | ||
| 28 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
696,500 | ||
| 28.1 |
Schwab U.S. Mid-Cap ETF
Fund
S000026635 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
193,569 | ||
| 28.2 |
Schwab U.S. Large-Cap Growth ETF
Fund
S000026633 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
151,961 | ||
| 28.3 |
Schwab Fundamental U.S. Small Company ETF
Fund
S000040878 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
100,554 | ||
| 28.4 |
Schwab U.S. Large-Cap ETF
Fund
S000026632 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
75,318 | ||
| 28.5 |
Schwab Select Large Cap Growth Fund
Fund
S000025589 · Registered fund · Jun 30, 2026
LAUDUS TRUST, not summed
|
45,455 | ||
| 29 |
BAMCO INC /NY/
13F
CIK 1017918 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
680,431 | ||
| 29.1 |
Baron Real Estate Fund
Fund
S000027257 · Registered fund · Jun 30, 2026
BARON SELECT FUNDS, not summed
|
343,700 | ||
| 29.2 |
BARON DISCOVERY FUND
Fund
S000042178 · Registered fund · Jun 30, 2026
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND), not summed
|
225,000 | ||
| 29.3 |
Baron SMID Cap ETF
Fund
S000096483 · Registered fund · Jun 30, 2026
Baron ETF Trust, not summed
|
3,871 | ||
| 30 |
Capital International Investors
13F
CIK 1562230 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
657,285 | ||
| 31 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
641,404 | ||
| 31.1 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
|
2,871 | ||
| 31.2 |
Goldman Sachs MarketBeta U.S. 1000 Equity ETF
Fund
S000075322 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust II, not summed
|
2,276 | ||
| 31.3 |
Goldman Sachs U.S. Equity Dividend and Premium Fund
Fund
S000009324 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
|
1,800 | ||
| 31.4 |
Goldman Sachs MarketBeta(R) Russell 1000 Value Equity ETF
Fund
S000083006 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
853 | ||
| 31.5 |
Goldman Sachs JUST U.S. Large Cap Equity ETF
Fund
S000061377 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
744 | ||
| 32 |
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
13F
CIK 1705339 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
634,269 | ||
| 32.1 |
Global X U.S. Infrastructure Development ETF
Fund
S000056509 · Registered fund · May 31, 2026
GLOBAL X FUNDS, not summed
|
570,452 | ||
| 32.2 |
Global X Clean Water ETF
Fund
S000071326 · Registered fund · May 31, 2026
GLOBAL X FUNDS, not summed
|
6,880 | ||
| 33 |
Mirova US LLC
13F
CIK 1802900 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
619,117 | ||
| 34 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
594,404 | ||
| 34.1 |
Mid Cap Index Fund
Fund
S000001273 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
46,586 | ||
| 34.2 |
Multi-Manager Global Listed Infrastructure Fund
Fund
S000037667 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
2,635 | ||
| 34.3 |
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund
S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
|
2,212 | ||
| 35 |
Liontrust Investment Partners LLP
13F
CIK 1544204 · Registered fund · Jun 30, 2026
carried, not yet filed for the newest quarter
|
558,705 | ||
| 36 |
SCHRODER INVESTMENT MANAGEMENT GROUP
13F
CIK 1086619 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
551,815 | ||
| 37 |
State Street SPDR S&P MidCap 400SM ETF Trust
Fund
· Registered fund · Jun 30, 2026
SPDR S&P MIDCAP 400 ETF TRUST, not summed
|
551,392 | ||
| 37.1 |
Nuveen S&P 500 Dynamic Overwrite Fund
Fund
· Registered fund · Jun 30, 2026
Nuveen S&P 500 Dynamic Overwrite Fund, not summed
|
3,858 | ||
| 38 |
AMERIPRISE FINANCIAL INC
13F
CIK 820027 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
528,473 | ||
| 38.1 |
Columbia Mid Cap Index Fund
Fund
S000010826 · Registered fund · May 31, 2026
COLUMBIA FUNDS SERIES TRUST, not summed
|
51,187 | ||
| 38.2 |
Multi-Manager Value Strategies Fund
Fund
S000036208 · Registered fund · May 31, 2026
Columbia Funds Series Trust II, not summed
|
34,519 | ||
| 38.3 |
Columbia Research Enhanced Core ETF
Fund
S000066076 · Registered fund · Jul 31, 2026
Columbia ETF Trust I, not summed
|
30,641 | ||
| 38.4 |
Columbia Research Enhanced Value ETF
Fund
S000066077 · Registered fund · Jul 31, 2026
Columbia ETF Trust I, not summed
|
2,573 | ||
| 38.5 |
Columbia Research Enhanced Mid Cap ETF
Fund
S000095312 · Registered fund · Jun 30, 2026
Columbia ETF Trust I, not summed
|
58 | ||
| 39 |
Triodos Investment Management BV
13F
CIK 1748729 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
528,311 | ||
| 40 |
Eaton Vance Atlanta Capital SMID-Cap Fund
Fund
S000005198 · Registered fund · Jun 30, 2026
Eaton Vance Growth Trust, not summed
|
491,850 | ||
| 41 |
Hill City Capital, LP
13F
CIK 1837343 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
480,000 | ||
| 42 |
Bank of New York Mellon Corp
13F
CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
472,119 | ||
| 42.1 |
BNY Mellon US Mid Cap Core Equity ETF
Fund
S000067261 · Registered fund · Jul 31, 2026
BNY Mellon ETF Trust, not summed
|
10,536 | ||
| 43 |
Schonfeld Strategic Advisors LLC
13F
CIK 1665241 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
460,060 | ||
| 44 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
457,355 | ||
| 45 |
Interval Partners, LP
13F
CIK 1590228 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
452,250 | ||
| 46 |
First Trust SMID Cap Rising Dividend Achievers ETF
Fund
S000059604 · Registered fund · Jun 30, 2026
First Trust Exchange-Traded Fund VI, not summed
|
441,638 | ||
| 47 |
Thrivent Financial for Lutherans
13F
CIK 314984 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
425,647 | ||
| 47.1 |
THRIVENT SMALL CAP STOCK FUND
Fund
S000001358 · Registered fund · Jul 31, 2026
Thrivent Mutual Funds, not summed
|
146,306 | ||
| 47.2 |
Thrivent Small-Mid Cap Equity ETF
Fund
S000075337 · Registered fund · Jun 30, 2026
Thrivent ETF Trust, not summed
|
66,350 | ||
| 47.3 |
THRIVENT SMALL CAP STOCK PORTFOLIO
Fund
S000001445 · Registered fund · Jun 30, 2026
Thrivent Series Fund, Inc., not summed
|
48,598 | ||
| 47.4 |
THRIVENT AGGRESSIVE ALLOCATION FUND
Fund
S000000700 · Registered fund · Jul 31, 2026
Thrivent Mutual Funds, not summed
|
23,525 | ||
| 47.5 |
THRIVENT MODERATELY AGGRESSIVE ALLOCATION PORTFOLIO
Fund
S000001427 · Registered fund · Jun 30, 2026
Thrivent Series Fund, Inc., not summed
|
21,542 | ||
| 48 |
|
410,660 | ||
| 49 |
BROWN BROTHERS HARRIMAN & CO
13F
CIK 14661 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
405,502 | ||
| 50 |
VANGUARD DIVIDEND APPRECIATION INDEX FUND
Fund
S000011322 · Registered fund · Jul 31, 2026
VANGUARD SPECIALIZED FUNDS, not summed
|
405,477 |
74 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
Showing 1–50 of 776 holders
Create a free account to page through every holder, filter by source and group by ultimate parent.