Advanced Drainage Systems, Inc. · NYSE:WMS
Advanced Drainage Systems, Inc. shareholders
As of Jun 30, 2026, 535 institutions reported holding Advanced Drainage Systems, Inc., 92.4% of its shares. Largest: Vanguard, BlackRock and State Street. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Advanced Drainage Systems, Inc. | Change | Filed |
|---|---|---|---|---|
| Vanguard | 7.68M | 10.2% | +67,555 | Aug 13, 2026 |
| BlackRock | 7.47M | 9.9% | +47,211 | Aug 7, 2026 |
| State Street | 2.69M | 3.6% | +204K | Aug 7, 2026 |
| First Trust | 2.66M | 3.5% | +617K | Aug 11, 2026 |
| UBS | 2.62M | 3.5% | −50,676 | Aug 13, 2026 |
| Impax Asset Management Group plc | 1.85M | 2.4% | −81,568 | Aug 11, 2026 |
| Baillie Gifford & Co | 1.84M | 2.4% | −212K | Aug 6, 2026 |
| American Century | 1.63M | 2.2% | −23,451 | Aug 12, 2026 |
| Morgan Stanley | 1.39M | 1.8% | +60,496 | Aug 13, 2026 |
| Geode Capital | 1.37M | 1.8% | +22,648 | Aug 12, 2026 |