Advanced Drainage Systems, Inc.
US ˙ NYSE ˙ US00790R1041

SecurityWMS / Advanced Drainage Systems, Inc.
InstitutionFranklin Resources Inc
Latest Disclosed Ownership298,712 shares
Latest Disclosed Value $ 40,962,376
Franklin Resources Inc reports 18.70% decrease in ownership of WMS / Advanced Drainage Systems, Inc.

On May 13, 2026 - Franklin Resources Inc filed a 13F-HR form disclosing ownership of 298,712 shares of Advanced Drainage Systems, Inc. (US:WMS) valued at $40,962,377 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 367,419 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of -18.70% during the quarter. The current value of the position is $39,582,327 USD.

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.

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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)
2026-05-13 2026-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 298,712 -68,707 -18.70 40,962 -23.02 0.0016
2026-02-11 2025-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 367,419 81,609 28.55 53,213 34.24 0.0131
2025-11-13 2025-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 285,810 244,202 586.91 39,642 729.48 0.0099
2025-08-12 2025-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 41,608 -52 -0.12 4,779 5.59 0.0013
2025-05-13 2025-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 41,660 -22 -0.05 4,526 -6.06 0.0013
2025-02-12 2024-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 41,682 23 0.06 4,818 -25.56 0.0013
2024-11-27 2024-09-30 13F/A-1 ADVANCED DRAIN SYS INC DEL COM 00790R104 41,659 -7 -0.02 6,472 -3.14 0.0018
2024-11-12 2024-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 41,659 -7 6,472 0.0003
2024-08-14 2024-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 41,666 7 0.02 6,683 -6.87 0.0021
2024-05-13 2024-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 41,659 5,818 16.23 7,175 42.36 0.0023
2024-02-09 2023-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 35,841 -198 -0.55 5,041 22.87 0.0024
2023-11-13 2023-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 36,039 -19,581 -35.20 4,102 -35.18 0.0021
2023-08-11 2023-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 55,620 55,620 6,328 0.0030
2023-02-10 2022-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -3,832 -100.00 0 -100.00
2022-11-14 2022-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,832 -10,994 -74.15 477 -64.27 0.0003
2022-08-11 2022-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 14,826 -2,388 -13.87 1,335 -34.72 0.0007
2022-05-13 2022-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 17,214 660 3.99 2,045 -9.27 0.0008
2022-02-11 2021-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 16,554 -2,017 -10.86 2,254 12.25 0.0008
2021-11-12 2021-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 18,571 883 4.99 2,008 -2.62 0.0008
2021-08-13 2021-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 17,688 2,535 16.73 2,062 31.59 0.0008
2021-05-13 2021-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 15,153 6,399 73.10 1,567 114.07 0.0006
2021-02-10 2020-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 8,754 4,804 121.62 732 196.36 0.0003
2020-11-12 2020-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,950 3,950 247 0.0001
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.