Advanced Drainage Systems, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionTower Research Capital LLC (TRC)
Latest Disclosed Ownership3,236 shares
Latest Disclosed Value $ 443,753
Tower Research Capital LLC (TRC) reports 7.54% increase in ownership of WMS / Advanced Drainage Systems, Inc.

On May 15, 2026 - Tower Research Capital LLC (TRC) filed a 13F-HR form disclosing ownership of 3,236 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $443,753 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 3,009 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of 7.54% 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)
2026-05-15 2026-03-31 13F ADVANCED DRAIN SYS DEL COM 00790R104 3,236 227 7.54 444 1.84 0.0076
2026-02-17 2025-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,009 309 11.44 436 16.31 0.0105
2025-11-14 2025-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 2,700 -962 -26.27 374 -10.95 0.0103
2025-08-15 2025-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,662 1,642 81.29 421 91.78 0.0113
2025-05-15 2025-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 2,020 -1,443 -41.67 219 -45.25 0.0065
2025-02-13 2024-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,463 1,083 45.50 400 6.95 0.0079
2024-11-14 2024-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 2,380 -4,651 -66.15 374 -66.81 0.0099
2024-08-13 2024-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 7,031 1,607 29.63 1,128 20.66 0.0190
2024-05-15 2024-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 5,424 -3,563 -39.65 934 -26.05 0.0225
2024-02-13 2023-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 8,987 5,647 169.07 1,264 232.37 0.0156
2023-11-14 2023-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,340 -2,892 -46.41 380 -46.40 0.0119
2023-08-14 2023-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,232 4,263 216.51 709 0.0236
2023-05-09 2023-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,969 -2,791 -58.63 0 0.0053
2023-02-10 2022-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,760 1,302 37.65 0 -100.00 0.0162
2022-11-10 2022-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,458 2,159 166.20 430 267.52 0.0070
2022-08-15 2022-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,299 -4,869 -78.94 117 -84.04 0.0026
2022-05-12 2022-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,168 5,921 2,397.17 733 2,055.88 0.0070
2022-02-14 2021-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 247 -22 -8.18 34 17.24 0.0006
2021-11-15 2021-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 269 -7,467 -96.52 29 -96.78 0.0007
2021-08-16 2021-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 7,736 3,132 68.03 902 89.50 0.0235
2021-05-17 2021-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,604 2,282 98.28 476 145.36 0.0080
2021-02-16 2020-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 2,322 -32,155 -93.27 194 -90.99 0.0059
2020-11-16 2020-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 34,477 22,662 191.81 2,152 269.13 0.0238
2020-08-13 2020-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 11,815 11,815 583 0.0239
2020-05-15 2020-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -1,079 -100.00 0 -100.00
2020-02-07 2019-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,079 -5,574 -83.78 42 -80.47 0.0035
2019-11-05 2019-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,653 6,653 215 0.0147
2019-08-13 2019-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -1,820 -100.00 0 -100.00
2019-05-14 2019-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,820 -161 -8.13 47 -2.08 0.0029
2019-02-14 2018-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,981 -2,363 -54.40 48 -64.18 0.0035
2018-11-13 2018-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,344 4,272 5,933.33 134 6,600.00 0.0098
2018-08-14 2018-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 72 -1,288 -94.71 2 -94.29 0.0001
2018-05-15 2018-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,360 1,360 35 0.0030
2018-02-09 2017-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -4,286 -100.00 0 -100.00
2017-11-14 2017-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,286 3,194 292.49 86 290.91 0.0071
2017-08-14 2017-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,092 592 118.40 22 100.00 0.0025
2017-05-19 2017-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 500 -925 -64.91 11 -62.07 0.0011
2017-02-03 2016-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,425 1,425 0.00 29 0.0031
2016-11-08 2016-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -217 -100.00 0 -100.00
2016-08-10 2016-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 217 217 0.00 6 0.0006
2016-05-16 2016-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -310 -100.00 0 -100.00
2016-02-10 2015-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 310 310 0.00 7 0.0011
2015-11-13 2015-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -6,585 -100.00 0 -100.00
2015-07-30 2015-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,585 6,585 0.00 193 0.0171
2015-02-05 2014-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -750 -100.00 0 -100.00
2014-10-31 2014-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 750 750 -72.12 15 -78.57 0.0017
2014-01-31 2013-12-31 13F WMS INDS COM 929297109 0 -2,690 -100.00 0 -100.00
2013-11-06 2013-09-30 13F WMS INDS COM 929297109 2,690 2,641 5,389.80 70 6,900.00 0.0075
2013-08-05 2013-06-30 13F WMS INDS COM 929297109 49 49 1 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.