Advanced Drainage Systems, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionJanney Montgomery Scott LLC
Latest Disclosed Ownership74,769 shares
Latest Disclosed Value $ 10,253
Janney Montgomery Scott LLC reports 3.06% decrease in ownership of WMS / Advanced Drainage Systems, Inc.

On April 22, 2026 - Janney Montgomery Scott LLC filed a 13F-HR form disclosing ownership of 74,769 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $10,253 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 77,132 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of -3.06% 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.

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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)
2026-04-22 2026-03-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 74,769 -2,363 -3.06 10 -9.09 0.0254
2026-02-11 2025-12-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 77,132 -91,790 -54.34 11 -52.17 0.0256
2025-10-27 2025-09-30 13F ADVANCED DRAIN SYS Common Stock 00790R104 168,922 -3,393 -1.97 23 21.05 0.0555
2025-07-17 2025-06-30 13F ADVANCED DRAIN SYS Common Stock 00790R104 172,315 1,093 0.64 20 5.56 0.0517
2025-04-17 2025-03-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 171,222 7,312 4.46 19 0.00 0.0527
2025-01-17 2024-12-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 163,910 20,146 14.01 19 -18.18 0.0525
2024-10-29 2024-09-30 13F ADVANCED DRAIN SYS Common Stock 00790R104 143,764 10,075 7.54 23 4.76 0.0631
2024-07-25 2024-06-30 13F ADVANCED DRAIN SYS Common Stock 00790R104 133,689 -37,213 -21.77 21 -27.59 0.0654
2024-05-01 2024-03-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 170,902 12,109 7.63 29 31.82 0.0875
2024-02-08 2023-12-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 158,793 84,161 112.77 22 175.00 0.0725
2023-11-08 2023-09-30 13F ADVANCED DRAIN SYS Common Stock 00790R104 74,632 2,243 3.10 8 0.00 0.0317
2023-07-26 2023-06-30 13F ADVANCED DRAIN SYS Common Stock 00790R104 72,389 -3,035 -4.02 8 33.33 0.0287
2023-04-28 2023-03-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 75,424 71,357 1,754.54 6 0.0259
2023-02-01 2022-12-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 4,067 -1,373 -25.24 0 -100.00 0.0013
2022-10-25 2022-09-30 13F ADVANCED DRAIN SYS Common Stock 00790R104 5,440 2,828 108.27 676 186.44 0.0029
2022-08-03 2022-06-30 13F ADVANCED DRAIN SYS Common Stock 00790R104 2,612 285 12.25 236 -14.49 0.0011
2022-05-04 2022-03-31 13F ADVSHS PURE US CANN ETF Common Stock 00790R104 2,327 2,327 276 0.0012
2021-04-27 2021-03-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 0 -2,500 -100.00 0 -100.00
2021-01-25 2020-12-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 2,500 2,500 209 0.0010
2019-02-01 2018-12-31 13F ADVANCED DRAIN SYS Common Stock 00790R104 0 -6,755 -100.00 0 -100.00
2018-11-05 2018-09-30 13F ADVANCED DRAIN SYS Common Stock 00790R104 6,755 6,755 209 0.0018
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.