Advanced Drainage Systems, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionAdvisors Asset Management, Inc.
Latest Disclosed Ownership6,204 shares
Latest Disclosed Value $ 850,755
Advisors Asset Management, Inc. reports 2.65% decrease in ownership of WMS / Advanced Drainage Systems, Inc.

On May 15, 2026 - Advisors Asset Management, Inc. filed a 13F-HR form disclosing ownership of 6,204 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $850,755 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 6,373 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of -2.65% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,204 -169 -2.65 851 -7.91 0.0141
2026-02-12 2025-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,373 -142 -2.18 923 2.21 0.0155
2025-11-06 2025-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,515 -2,167 -24.96 904 -9.43 0.0153
2025-08-12 2025-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 8,682 -170 -1.92 997 3.75 0.0179
2025-05-15 2025-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 8,852 -134 -1.49 962 -7.42 0.0181
2025-02-10 2024-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 8,986 1,304 16.97 1,039 -14.00 0.0191
2024-11-08 2024-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 7,682 -1,692 -18.05 1,207 -19.69 0.0222
2024-08-14 2024-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 9,374 -962 -9.31 1,503 -15.56 0.0293
2024-05-14 2024-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 10,336 -3,081 -22.96 1,780 -5.62 0.0342
2024-02-14 2023-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 13,417 -10,557 -44.04 1,887 -30.87 0.0385
2023-11-14 2023-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 23,974 -1,542 -6.04 2,729 -6.03 0.0589
2023-08-14 2023-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 25,516 -4,863 -16.01 2,903 13.49 0.0593
2023-05-12 2023-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 30,379 -18,981 -38.45 2,558 -36.78 0.0520
2023-02-13 2022-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 49,360 -4,628 -8.57 4,046 -39.74 0.0834
2022-11-08 2022-09-30 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 53,988 9,340 20.92 6,714 66.97 0.1412
2022-08-08 2022-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 44,648 964 2.21 4,021 -22.52 0.0763
2022-05-17 2022-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 43,684 -5,763 -11.65 5,190 -22.89 0.0799
2022-02-15 2021-12-31 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 49,447 18,182 58.15 6,731 99.02 0.0961
2021-11-12 2021-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 31,265 6,354 25.51 3,382 16.46 0.0514
2021-07-30 2021-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 24,911 5,545 28.63 2,904 45.05 0.0428
2021-05-07 2021-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 19,366 10,155 110.25 2,002 160.00 0.0311
2021-02-12 2020-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 9,211 7,511 441.82 770 1,650.00 0.0127
2013-11-15 2013-09-30 13F WMS INDS COM 929297109 1,700 0 0.00 44 2.33 0.0008
2013-08-14 2013-06-30 13F WMS INDS COM 929297109 1,700 1,700 43 0.0008
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.