Advanced Drainage Systems, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionPrudential Financial Inc
Latest Disclosed Ownership21,131 shares
Latest Disclosed Value $ 2,897,694
Prudential Financial Inc reports 292.40% increase in ownership of WMS / Advanced Drainage Systems, Inc.

On May 13, 2026 - Prudential Financial Inc filed a 13F-HR form disclosing ownership of 21,131 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $2,897,694 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,385 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of 292.40% 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)
2026-05-13 2026-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 21,131 15,746 292.40 2,898 266.25 0.0036
2026-02-13 2025-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 5,385 -1,585 -22.74 791 -18.12 0.0010
2025-11-13 2025-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,970 -230 -3.19 967 16.95 0.0011
2025-08-12 2025-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 7,200 1,715 31.27 827 38.82 0.0011
2025-05-13 2025-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 5,485 1,355 32.81 596 24.74 0.0008
2025-02-11 2024-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,130 -293 -6.62 477 -31.37 0.0007
2024-11-14 2024-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,423 -3,866 -46.64 695 -47.71 0.0010
2024-08-13 2024-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 8,289 -5,625 -40.43 1,329 -44.53 0.0020
2024-05-14 2024-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 13,914 9,678 228.47 2,397 302.69 0.0034
2024-02-13 2023-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,236 317 8.09 596 33.41 0.0009
2023-11-13 2023-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,919 1 0.03 446 0.22 0.0007
2023-08-11 2023-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,918 -30 -0.76 446 22.93 0.0006
2023-05-12 2023-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,948 -5,623 -58.75 363 -53.83 0.0006
2023-02-14 2022-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 9,571 -84,729 -89.85 785 -93.24 0.0013
2022-11-04 2022-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 94,300 92,062 4,113.58 11,596 5,612.32 0.0197
2022-08-15 2022-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 2,238 82 3.80 203 -20.70 0.0003
2022-05-13 2022-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 2,156 194 9.89 256 8.02 0.0003
2022-02-14 2021-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,962 -147 -6.97 237 3.95 0.0003
2021-11-15 2021-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 2,109 -30,007 -93.43 228 -93.91 0.0003
2021-08-16 2021-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 32,116 -55,162 -63.20 3,744 -58.51 0.0052
2021-05-12 2021-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 87,278 82,353 1,672.14 9,023 2,090.05 0.0135
2021-08-16 2020-12-31 13F/A-1 ADVANCED DRAIN SYS INC DEL COM 0083 00790R104 4,925 303 6.56 412 42.56 0.0007
2021-02-16 2020-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,925 303 412 0.0007
2020-11-16 2020-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,622 572 14.12 289 44.50 0.0005
2020-08-12 2020-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,050 4,050 200 0.0004
2020-05-12 2020-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -38,469 -100.00 0 -100.00
2020-02-11 2019-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 38,469 -37,909 -49.63 1,494 -39.39 0.0022
2019-11-13 2019-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 76,378 66,665 686.35 2,465 675.16 0.0039
2019-08-08 2019-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 9,713 480 5.20 318 33.61 0.0005
2019-05-15 2019-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 9,233 9,233 -74.40 238 -74.57 0.0004
2014-02-11 2013-12-31 13F WMS INDS COM 929297109 0 -36,070 -100.00 0 -100.00
2013-11-07 2013-09-30 13F WMS INDS COM 929297109 36,070 600 1.69 936 3.43 0.0020
2013-08-07 2013-06-30 13F WMS INDS COM 929297109 35,470 35,470 905 0.0020
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.