Security key
00790R104
ADVANCED DRAINAGE SYSTEMS, INC. - Common Stock (WMS)
CUSIP: 00790R104
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 69,351,549
- Total 13F value
- $9,505,437,149
- Share change
- -1,910,288
- Put/Call ratio
- 75%
- SEC-reported price per share
- $137.13
- Number of holders
- 571
- Value change
- -$274,775,823
- Number of buys
- 317
- Number of sells
- 219
- Shares outstanding
- 78,022,980
Holder snapshot
7 facts
Show 1 more fact
Security identity
1 fact
Report period
Q1 2026
Institutions
571
Top holders
10
WMS full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q4 2025
ADVANCED DRAINAGE SYSTEMS, INC. SEC filings
ADVANCED DRAINAGE SYSTEMS, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 00790R104
Recent filing periods:
Ownership snapshot
Top reported holders of WMS - ADVANCED DRAINAGE SYSTEMS, INC. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
31 Mar 2026
13F
13D/G
3/4/5
Lead comparable stake: 8.9%
13D/G row: BlackRock, Inc.
Showing 1-6 of 15 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 8.9%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
BlackRock, Inc.
8.9%
DELAWARE CHARTER GUARANTEE & TRUS...
6%
VANGUARD CAPITAL MANAGEMENT LLC
5.1%
Robert M. Eversole
0.07%
Tanya D. Fratto
0.04%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
8.9%
from 13D/G
|
$1,030,018,922
7,111,917 shares
|
— | 31 Dec 2025 |
| DELAWARE CHARTER GUARANTEE & TRUST CO |
13D/G
Advanced Drainage Systems Inc. Employee Stock Ownership Plan Trust
|
6%
|
$701,834,983
4,629,213 shares
|
$0 | 31 Dec 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
Vanguard Capital Management
|
5.1%
|
$545,663,856
3,979,172 shares
|
$0 | 31 Mar 2026 |
| Robert M. Eversole |
3/4/5
Director
|
0.07%
|
$7,763,042
51,462 shares
|
-$1,615,155 | 03 Dec 2025 |
| Tanya D. Fratto |
3/4/5
Director
|
0.04%
|
$3,381,708
29,442 shares
|
— | 17 Jul 2025 |
| Manuel J. Perez de la Mesa |
3/4/5
Director
|
0.03%
|
$2,674,859
23,288 shares
|
— | 17 Jul 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
571
Shares
69,351,549
Rows available
571
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
542
Q1 2026 holders
571
Holder diff
29
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend