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 September 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 |
|---|---|---|
| Pictet Asset Management Holding SA | 1.5M | 21.8% |
| DIMENSIONAL FUND ADVISORS LP | 1.4M | 20.2% |
| KBC Group NV | 919.8K | 13.4% |
| Swedbank AB | 404.0K | 5.9% |
| Robeco Schweiz AG | 271.5K | 3.9% |
| J. Safra Sarasin Holding AG | 190.9K | 2.8% |
| MACKENZIE FINANCIAL CORP | 187.4K | 2.7% |
| PRINCIPAL FINANCIAL GROUP INC | 161.1K | 2.3% |
| EXCHANGE TRADED CONCEPTS, LLC | 117.2K | 1.7% |
| Perpetual Ltd | 108.1K | 1.6% |
| Candriam S.C.A. | 76.5K | 1.1% |
| Retirement Systems of Alabama | 72.3K | 1.0% |
| State of Alaska, Department of Revenue | 70.8K | 1.0% |
| Channing Capital Management, LLC | 68.7K | 1.0% |
| OPPENHEIMER & CO INC | 65.0K | 0.9% |
| KORNITZER CAPITAL MANAGEMENT INC /KS | 64.9K | 0.9% |
| OP Asset Management Ltd | 56.9K | 0.8% |
| STRS OHIO | 50.3K | 0.7% |
| DekaBank Deutsche Girozentrale | 48.9K | 0.7% |
| Creative Planning | 47.1K | 0.7% |
| PRENTISS SMITH & CO INC | 41.9K | 0.6% |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | 40.8K | 0.6% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 39.2K | 0.6% |
| Vontobel Holding Ltd. | 36.4K | 0.5% |
| AMALGAMATED BANK | 31.3K | 0.5% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Pictet Asset Management Holding SA | Increased | 1.1M | 1.5M | +377.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.3M | 1.4M | +113.0K |
| Achmea Investment Management B.V. | Sold Out | 102.9K | 0 | -102.9K |
| Assenagon Asset Management S.A. | Sold Out | 53.6K | 0 | -53.6K |
| OP Asset Management Ltd | Reduced | 94.2K | 56.9K | -37.3K |
| DekaBank Deutsche Girozentrale | Increased | 18.4K | 48.9K | +30.5K |
| Creative Planning | Increased | 30.5K | 47.1K | +16.6K |
| VIRGINIA RETIREMENT SYSTEMS ET Al | Reduced | 21.0K | 4.7K | -16.3K |
| Genus Capital Management Inc. | New | 0 | 16.1K | +16.1K |
| Asset Management One Co., Ltd. | Sold Out | 13.7K | 0 | -13.7K |
| MACKENZIE FINANCIAL CORP | Increased | 175.9K | 187.4K | +11.5K |
| Vest Financial, LLC | Reduced | 34.8K | 23.4K | -11.4K |
| CITIGROUP INC | Reduced | 20.4K | 10.2K | -10.2K |
| Bell Asset Management Ltd | Reduced | 29.6K | 19.9K | -9.7K |
| Oak Thistle LLC | New | 0 | 9.3K | +9.3K |
| J. Safra Sarasin Holding AG | Increased | 182.0K | 190.9K | +8.9K |
| VERUS CAPITAL PARTNERS, LLC | New | 0 | 7.3K | +7.3K |
| AlphaCore Capital LLC | New | 0 | 6.9K | +6.9K |
| Swedbank AB | Reduced | 410.7K | 404.0K | -6.7K |
| CenterBook Partners LP | Sold Out | 4.8K | 0 | -4.8K |
| GATEWAY INVESTMENT ADVISERS LLC | Increased | 1.9K | 6.6K | +4.7K |
| Henshaw Capital LLC | Sold Out | 4.4K | 0 | -4.4K |
| STRS OHIO | Reduced | 54.5K | 50.3K | -4.3K |
| M&G PLC | Increased | 6.3K | 10.4K | +4.1K |
| KBC Group NV | Reduced | 923.7K | 919.8K | -3.9K |
| ALPS ADVISORS INC | Sold Out | 3.6K | 0 | -3.6K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | Increased | 7.8K | 11.3K | +3.6K |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | New | 0 | 3.1K | +3.1K |
| Cambridge Investment Research Advisors, Inc. | Sold Out | 2.9K | 0 | -2.9K |
| ABSHER WEALTH MANAGEMENT, LLC | Increased | 7.5K | 10.4K | +2.9K |
| NISA INVESTMENT ADVISORS, LLC | Reduced | 4.4K | 1.5K | -2.9K |
| OPPENHEIMER & CO INC | Increased | 62.1K | 65.0K | +2.8K |
| Channing Capital Management, LLC | Reduced | 71.5K | 68.7K | -2.7K |
| Gryphon Financial Partners LLC | Reduced | 25.4K | 22.7K | -2.7K |
| Inspire Investing, LLC | Increased | 4.4K | 7.1K | +2.7K |
| Vontobel Holding Ltd. | Reduced | 39.1K | 36.4K | -2.7K |
| SUMMIT SECURITIES GROUP LLC | New | 0 | 2.4K | +2.4K |
| IFP Advisors, Inc | Reduced | 2.6K | 230 | -2.4K |
| Summit Creek Advisors LLC | Sold Out | 2.2K | 0 | -2.2K |
| Trium Capital LLP | New | 0 | 2.1K | +2.1K |
| State of Wyoming | New | 0 | 2.0K | +2.0K |
| Vise Technologies, Inc. | New | 0 | 1.8K | +1.8K |
| Retirement Systems of Alabama | Reduced | 74.1K | 72.3K | -1.8K |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | Increased | 1.6K | 3.3K | +1.8K |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 162.7K | 161.1K | -1.6K |
| Perpetual Ltd | Increased | 106.4K | 108.1K | +1.6K |
| YOUSIF CAPITAL MANAGEMENT, LLC | Reduced | 20.5K | 19.0K | -1.5K |
| PROFUND ADVISORS LLC | Sold Out | 1.5K | 0 | -1.5K |
| New England Research & Management, Inc. | Sold Out | 1.5K | 0 | -1.5K |
| Sepio Capital, LP | Sold Out | 1.4K | 0 | -1.4K |
| Hamilton Capital, LLC | Sold Out | 1.4K | 0 | -1.4K |
| Fulcrum Asset Management LLP | New | 0 | 1.4K | +1.4K |
| BDF-GESTION | Reduced | 11.7K | 10.4K | -1.3K |
| PRENTISS SMITH & CO INC | Reduced | 43.2K | 41.9K | -1.3K |
| ESSEX INVESTMENT MANAGEMENT CO LLC | Reduced | 40.4K | 39.2K | -1.2K |
| Valeo Financial Advisors, LLC | Increased | 2.7K | 3.8K | +1.2K |
| Perigon Wealth Management, LLC | Increased | 4.5K | 5.6K | +1.1K |
| State of New Jersey Common Pension Fund D | Reduced | 23.6K | 22.5K | -1.1K |
| ELCO Management Co., LLC | Reduced | 4.3K | 3.2K | -1.1K |
| New York Life Investment Management LLC | Increased | 8.5K | 9.6K | +1.1K |
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.