WMS Advanced Drainage Systems, Inc.
Advanced Drainage Systems, Inc. (WMS) Institutional Ownership
What the institutions did with WMS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 7.5M | 10.7% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.7M | 5.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.4M | 4.9% |
| STATE STREET CORP | 2.7M | 3.9% |
| FIRST TRUST ADVISORS LP | 2.7M | 3.8% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 2.3M | 3.4% |
| Impax Asset Management Group plc | 1.8M | 2.7% |
| BAILLIE GIFFORD & CO | 1.8M | 2.6% |
| AMERICAN CENTURY COMPANIES INC | 1.6M | 2.3% |
| MORGAN STANLEY | 1.4M | 2.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.4M | 2.0% |
| Amundi | 1.4M | 1.9% |
| NORGES BANK | 1.3M | 1.9% |
| DIMENSIONAL FUND ADVISORS LP | 1.3M | 1.8% |
| Pictet Asset Management Holding SA | 1.1M | 1.6% |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 1.0M | 1.5% |
| KBC Group NV | 923.7K | 1.3% |
| WELLINGTON MANAGEMENT GROUP LLP | 840.5K | 1.2% |
| Qube Research & Technologies Ltd | 839.8K | 1.2% |
| Invesco Ltd. | 835.7K | 1.2% |
| Impactive Capital LP | 782.8K | 1.1% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 696.5K | 1.0% |
| BAMCO INC /NY/ | 680.4K | 1.0% |
| Capital International Investors | 657.3K | 0.9% |
| GOLDMAN SACHS GROUP INC | 641.4K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Pictet Asset Management Holding SA | Reduced | 2.2M | 1.1M | -1.1M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Sold Out | 655.7K | 0 | -655.7K |
| FIRST TRUST ADVISORS LP | Increased | 2.0M | 2.7M | +616.7K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | 550.0K | 150.0K | -400.0K |
| BAMCO INC /NY/ | Increased | 291.2K | 680.4K | +389.3K |
| Balyasny Asset Management L.P. | Increased | 3.1K | 342.9K | +339.9K |
| MARSHALL WACE, LLP | Increased | 6.9K | 314.5K | +307.6K |
| Qube Research & Technologies Ltd | Increased | 546.4K | 839.8K | +293.4K |
| Alyeska Investment Group, L.P. | Sold Out | 258.5K | 0 | -258.5K |
| Swedbank AB | Increased | 165.0K | 410.7K | +245.7K |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 1.1M | 840.5K | -222.7K |
| Thrivent Financial for Lutherans | Increased | 204.0K | 425.6K | +221.7K |
| Mediolanum International Funds Ltd | Sold Out | 212.8K | 0 | -212.8K |
| BAILLIE GIFFORD & CO | Reduced | 2.0M | 1.8M | -212.1K |
| STATE STREET CORP | Increased | 2.5M | 2.7M | +204.1K |
| GOLDMAN SACHS GROUP INC | Increased | 451.8K | 641.4K | +189.6K |
| WESTWOOD HOLDINGS GROUP INC | Reduced | 553.2K | 367.9K | -185.3K |
| AMERIPRISE FINANCIAL INC | Increased | 358.9K | 528.5K | +169.5K |
| FIL Ltd | Increased | 62.8K | 221.2K | +158.4K |
| Clearbridge Investments, LLC | Increased | 11.6K | 166.4K | +154.8K |
| Invesco Ltd. | Reduced | 982.5K | 835.7K | -146.9K |
| Rathbones Group PLC | Reduced | 261.6K | 131.7K | -129.8K |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | New | 0 | 118.3K | +118.3K |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Increased | 3.0K | 119.2K | +116.2K |
| AEGON ASSET MANAGEMENT UK Plc | Sold Out | 113.8K | 0 | -113.8K |
| Gotham Asset Management, LLC | Reduced | 294.7K | 182.9K | -111.8K |
| Hill City Capital, LP | Increased | 370.0K | 480.0K | +110.0K |
| Baird Financial Group, Inc. | Increased | 19.4K | 128.1K | +108.7K |
| SCOPUS ASSET MANAGEMENT, L.P. | Increased | 58.0K | 166.2K | +108.3K |
| Distillate Capital Partners LLC | Sold Out | 106.7K | 0 | -106.7K |
| Driehaus Capital Management LLC | Sold Out | 105.6K | 0 | -105.6K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | 2.5M | 2.3M | -103.5K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 123.6K | 225.8K | +102.2K |
| BANK OF AMERICA CORP /DE/ | Reduced | 439.6K | 340.3K | -99.3K |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. | Reduced | 294.9K | 197.0K | -97.9K |
| JANE STREET GROUP, LLC | Reduced | 98.2K | 4.8K | -93.4K |
| Janney Montgomery Scott LLC | Increased | 74.8K | 165.5K | +90.7K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 223.9K | 133.2K | -90.7K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 3.6M | 3.7M | +89.9K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.2M | 1.3M | +86.0K |
| PEREGRINE CAPITAL MANAGEMENT LLC | Sold Out | 82.6K | 0 | -82.6K |
| CANADA PENSION PLAN INVESTMENT BOARD | Sold Out | 81.9K | 0 | -81.9K |
| Impax Asset Management Group plc | Reduced | 1.9M | 1.8M | -81.6K |
| Trexquant Investment LP | Increased | 11.6K | 89.6K | +78.0K |
| Impactive Capital LP | Reduced | 856.5K | 782.8K | -73.7K |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | Reduced | 1.1M | 1.0M | -71.2K |
| Amundi | Increased | 1.3M | 1.4M | +65.9K |
| Interval Partners, LP | Increased | 388.9K | 452.3K | +63.4K |
| MORGAN STANLEY | Increased | 1.3M | 1.4M | +60.5K |
| HITE Hedge Asset Management LLC | New | 0 | 60.4K | +60.4K |
| Archon Partners LLC | Sold Out | 59.0K | 0 | -59.0K |
| Allianz Asset Management GmbH | Reduced | 381.4K | 325.7K | -55.7K |
| ExodusPoint Capital Management, LP | Sold Out | 55.7K | 0 | -55.7K |
| SEGALL BRYANT & HAMILL, LLC | Sold Out | 54.4K | 0 | -54.4K |
| NOMURA ASSET MANAGEMENT CO LTD | Increased | 80.6K | 133.5K | +52.9K |
| UBS Group AG | Increased | 218.1K | 270.9K | +52.8K |
| Owls Nest Partners IA, LLC | Reduced | 264.1K | 211.8K | -52.3K |
| WCM INVESTMENT MANAGEMENT, LLC | Increased | 113.9K | 165.1K | +51.2K |
| BROWN BROTHERS HARRIMAN & CO | Reduced | 455.6K | 405.5K | -50.1K |
| Cercano Management LLC | Sold Out | 50.0K | 0 | -50.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.