Advanced Drainage Systems, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionAmeriprise Financial Inc
Latest Disclosed Ownership358,948 shares
Latest Disclosed Value $ 49,222,691
Ameriprise Financial Inc reports 20.18% decrease in ownership of WMS / Advanced Drainage Systems, Inc.

On May 15, 2026 - Ameriprise Financial Inc filed a 13F-HR form disclosing ownership of 358,948 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $49,222,691 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 449,713 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of -20.18% 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 DRAINAGE SYSTEMS IN COM 00790R104 358,948 -90,765 -20.18 49,223 -24.43 0.0021
2026-02-17 2025-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 449,713 -112,919 -20.07 65,132 -16.56 0.0147
2025-11-14 2025-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 562,632 -119,769 -17.55 78,055 -0.41 0.0179
2025-08-14 2025-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 682,401 -55,653 -7.54 78,376 -2.25 0.0193
2025-05-14 2025-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 738,054 62,405 9.24 80,184 2.67 0.0216
2025-02-14 2024-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 675,649 339,329 100.89 78,094 48.39 0.0200
2024-11-14 2024-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 336,320 -49,831 -12.90 52,629 -15.01 0.0135
2024-08-14 2024-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 386,151 -168,213 -30.34 61,925 -35.12 0.0168
2024-05-15 2024-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 554,364 -29,388 -5.03 95,453 16.26 0.0263
2024-02-14 2023-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 583,752 -105,221 -15.27 82,103 4.69 0.0246
2023-11-14 2023-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 688,973 -139,535 -16.84 78,424 -16.81 0.0257
2023-08-14 2023-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 828,508 -311,728 -27.34 94,268 -1.82 0.0296
2023-05-22 2023-03-31 13F/A-1 ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,140,236 359,611 46.07 96,019 50.06 0.0315
2023-05-15 2023-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,140,236 359,611 96,019 0.0058
2023-02-14 2022-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 780,625 -30,672 -3.78 63,989 -36.58 0.0219
2022-11-14 2022-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 811,297 -367,426 -31.17 100,899 -4.98 0.0373
2022-08-15 2022-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,178,723 3,999 0.34 106,185 -23.92 0.0370
2022-05-16 2022-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,174,724 18,011 1.56 139,570 -11.33 0.0412
2022-02-14 2021-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,156,713 122,056 11.80 157,412 40.69 0.0435
2021-11-15 2021-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,034,657 31,783 3.17 111,886 -4.29 0.0357
2021-08-16 2021-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,002,874 10,460 1.05 116,907 13.91 0.0361
2021-05-17 2021-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 992,414 27,272 2.83 102,635 27.26 0.0341
2021-02-12 2020-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 965,142 7,981 0.83 80,649 34.96 0.0286
2020-11-16 2020-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 957,161 244,004 34.21 59,757 69.88 0.0243
2020-08-14 2020-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 713,157 50,820 7.67 35,175 80.39 0.0151
2020-05-15 2020-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 662,337 500,453 309.14 19,499 210.15 0.0102
2020-02-14 2019-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 161,884 -40,167 -19.88 6,287 -3.57 0.0026
2019-11-14 2019-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 202,051 -80,377 -28.46 6,520 -29.59 0.0029
2019-08-14 2019-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 282,428 -17,012 -5.68 9,260 19.99 0.0041
2019-05-15 2019-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 299,440 56,326 23.17 7,717 30.91 0.0035
2019-02-14 2018-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 243,114 160,799 195.35 5,895 131.81 0.0029
2018-11-14 2018-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 82,315 82,315 2,543 0.0009
2018-08-14 2018-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 0 -193,596 -100.00 0 -100.00
2018-05-14 2018-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 193,596 36,915 23.56 5,015 34.20 0.0023
2018-02-12 2017-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 156,681 156,681 3,737 0.0017
2017-11-07 2017-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 0 -90,167 -100.00 0 -100.00
2017-08-10 2017-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 90,167 -573 -0.63 1,812 -8.81 0.0009
2017-05-05 2017-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 90,740 27,827 44.23 1,987 53.32 0.0010
2017-02-03 2016-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 62,913 -38,900 -38.21 1,296 -47.08 0.0007
2016-11-08 2016-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 101,813 -23,340 -18.65 2,449 -28.50 0.0014
2016-08-08 2016-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 125,153 -224,423 -64.20 3,425 -54.00 0.0020
2016-05-12 2016-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 349,576 179,798 105.90 7,446 82.50 0.0044
2016-02-11 2015-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 169,778 -11,320 -6.25 4,080 -22.12 0.0024
2015-11-12 2015-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 181,098 -52,139 -22.35 5,239 -23.42 0.0032
2015-08-13 2015-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 233,237 -64,243 -21.60 6,841 -23.20 0.0039
2015-05-14 2015-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 297,480 0 0.00 8,907 30.30 0.0051
2015-02-13 2014-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 297,480 162,445 120.30 6,836 141.64 0.0040
2014-11-14 2014-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 135,035 5,937 4.60 2,829 -15.58 0.0017
2013-11-14 2013-09-30 13F WMS INDUSTRIES COM 929297109 129,098 10,143 8.53 3,351 10.41 0.0022
2013-08-14 2013-06-30 13F WMS INDUSTRIES COM 929297109 118,955 118,955 3,035 0.0021
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.