WMS: Advanced Drain Sys Inc Del insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Institutional ownership (Q2 2026)
558 institutions reported holding $10.56B of Advanced Drain Sys Inc Del on Form 13F (580 the quarter before). 55 opened a new position and 79 sold out. Shares held by institutions: same.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 7,469,940 | $1.17B |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3,705,538 | $581.62M |
| VANGUARD CAPITAL MANAGEMENT LLC | 3,397,037 | $533.20M |
| STATE STREET CORP | 2,693,665 | $422.80M |
| FIRST TRUST ADVISORS LP | 2,660,753 | $417.63M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 2,346,623 | $368.33M |
| Impax Asset Management Group plc | 1,845,942 | $289.74M |
| BAILLIE GIFFORD & CO | 1,835,297 | $288.07M |
| AMERICAN CENTURY COMPANIES INC | 1,634,302 | $256.52M |
| MORGAN STANLEY | 1,393,836 | $218.78M |
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