Advanced Drainage Systems, Inc.
WMS- Exchange
- NYSE
- Industry
- Plastics Foam Products
- SEC CIK
- 0001604028
No open-market purchases or sales by Advanced Drainage Systems, Inc. insiders were filed in the last 90 days; 556 institutions reported holding it in 13F filings for Q2 2026, worth $11.2B in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, −16 vs. previous quarter
- 556
- 13F valueReported value at the end of Q2 2026
- $11.2B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding WMS, Q2 2026
No superinvestor reported holding WMS at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Advanced Drainage Systems, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 5, 2025 (view filing) | Dec 3 | 2 days | Eversole Robert MDirector | SSale | −10.6K | $152.82 | −$1.62M | −17.4%50.1K after | |
| Dec 1, 2025 (view filing) | Nov 26 | 5 days | Waun Thomas J. Sr.EVP, International | SSale | −1.50K | $155.00 | −$232.5K | −10.0%13.5K after | |
| Nov 13, 2025 (view filing) | Nov 11 | 2 days | Waun Thomas J. Sr.EVP, International | SSale | −1.27K | $148.30 | −$188.7K | −61.5%796.97 after | |
| Nov 13, 2025 (view filing) | Nov 12 | 1 day | Waun Thomas J. Sr.EVP, International | SSale | −1.00K | $150.00 | −$150.0K | −6.3%15.0K after | |
| Nov 13, 2025 (view filing) | Nov 12 | 1 day | Barbour D. ScottSee Remarks | SSale | −80.0K | $148.95 | −$11.9M | −65.1%42.9K after | 3 lots |
| Nov 13, 2025 (view filing) | Nov 12 | 1 day | Makowski Tim ASee Remarks | SSale | −4.90K | $149.21 | −$731.3K | −66.5%2.47K after | 2 lots |
| Jun 11, 2025 (view filing) | Jun 9 | 2 days | Harvey Darin S.EVP, Supply Chain & Logistics | SSale | −4.46K | $116.39 | −$519.6K | −60.7%2.89K after | |
| Feb 21, 2025 (view filing) | Feb 19 | 2 days | Harvey Darin S.EVP, Supply Chain & Logistics | SSale | −2.46K | $125.00 | −$308.0K | −44.5%3.07K after | 2 lots |
| Jun 3, 2024 (view filing) | May 30 | 4 days | Cottrill Scott AEVP, CFO AND SECRETARY | SSale | −73.2K | $173.11 | −$12.7M | −44.5%91.4K after | |
| Jun 3, 2024 (view filing) | May 31 | 3 days | Makowski Tim ASee Remarks | SSale | −3.80K | $170.68 | −$648.6K | −45.6%4.53K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in Advanced Drainage Systems, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 7,469,940 | $1.17B | 0.02% | +47,211+0.6% | Added |
| Vanguard Portfolio Management LLC | 3,705,538 | $581.6M | 0.03% | +89,851+2.5% | Added |
| Vanguard Capital Management LLC | 3,397,037 | $533.2M | 0.01% | −26,666−0.8% | Reduced |
| State Street Corp | 2,693,665 | $422.8M | 0.01% | +204,134+8.2% | Added |
| First Trust Advisors LP | 2,660,753 | $417.6M | 0.25% | +616,696+30.2% | Added |
| UBS Asset Management Americas Inc | 2,346,623 | $368.3M | 0.07% | −103,500−4.2% | Reduced |
| Impax Asset Management Group plc | 1,845,942 | $289.7M | 1.89% | −81,568−4.2% | Reduced |
| Baillie Gifford & Co | 1,835,297 | $288.1M | 0.26% | −212,052−10.4% | Reduced |
| Banque Cantonale Vaudoise | 1,635 | $257.0M | 0.04% | +1,635 | New |
| American Century Companies Inc | 1,634,302 | $256.5M | 0.11% | −23,451−1.4% | Reduced |