고급 배수 시스템, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionGeode Capital Management, Llc
Latest Disclosed Ownership1,344,795 shares
Latest Disclosed Value $ 184,456,288
Geode Capital Management, Llc reports 5.77% increase in ownership of WMS / Advanced Drainage Systems, Inc.

On May 15, 2026 - Geode Capital Management, Llc filed a 13F-HR form disclosing ownership of 1,344,795 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $184,456,288 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 1,271,453 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of 5.77% 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 1,344,795 73,342 5.77 184,456 0.15 0.0061
2026-02-09 2025-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,271,453 15,069 1.20 184,184 5.67 0.0114
2025-11-12 2025-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,256,384 34,743 2.84 174,294 24.19 0.0111
2025-08-08 2025-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,221,641 -22,375 -1.80 140,341 3.80 0.0098
2025-05-13 2025-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,244,016 51,270 4.30 135,204 -1.97 0.0106
2025-02-12 2024-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,192,746 5,868 0.49 137,924 -26.08 0.0107
2024-11-12 2024-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,186,878 59,158 5.25 186,578 3.13 0.0151
2024-08-09 2024-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,127,720 19,716 1.78 180,924 -5.22 0.0159
2024-05-13 2024-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,108,004 41,010 3.84 190,881 27.18 0.0177
2024-02-13 2023-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,066,994 39,453 3.84 150,086 28.30 0.0157
2023-11-13 2023-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 1,027,541 111,079 12.12 116,986 12.19 0.0139
2023-08-11 2023-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 916,462 44,265 5.08 104,275 41.97 0.0123
2023-05-15 2023-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 872,197 26,484 3.13 73,448 106,344.93 0.0095
2023-02-13 2022-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 845,713 48,297 6.06 69 -99.93 0.0097
2022-11-14 2022-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 797,416 77,830 10.82 99,174 53.02 0.0150
2022-08-12 2022-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 719,586 -5,800 -0.80 64,813 -24.80 0.0095
2022-05-13 2022-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 725,386 33,414 4.83 86,183 -8.51 0.0108
2022-02-11 2021-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 691,972 37,505 5.73 94,198 33.06 0.0113
2021-11-12 2021-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 654,467 35,887 5.80 70,793 -1.82 0.0095
2021-08-13 2021-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 618,580 -241,961 -28.12 72,107 -18.95 0.0099
2021-05-12 2021-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 860,541 71,140 9.01 88,971 34.85 0.0136
2021-02-12 2020-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 789,401 35,969 4.77 65,978 40.25 0.0111
2020-11-13 2020-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 753,432 -199 -0.03 47,044 26.36 0.0092
2020-08-13 2020-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 753,631 50,317 7.15 37,229 79.81 0.0080
2020-05-14 2020-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 703,314 43,248 6.55 20,705 -19.23 0.0054
2020-02-20 2019-12-31 13F/A-1 ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 660,066 61,982 10.36 25,636 32.84 0.0054
2020-02-13 2019-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 660,066 61,982 25,636 3,267.0834
2019-11-12 2019-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 598,084 63,597 11.90 19,299 10.12 0.0045
2019-08-14 2019-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 534,487 29,325 5.81 17,525 34.62 0.0042
2019-05-14 2019-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 505,162 31,611 6.68 13,018 13.37 0.0034
2019-03-06 2018-12-31 13F/A-1 ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 473,551 40,693 9.40 11,483 -14.15 0.0035
2019-02-13 2018-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 473,551 40,693 11,483
2018-11-13 2018-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 432,858 26,699 6.57 13,375 15.35 0.0038
2018-08-14 2018-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 406,159 68,999 20.46 11,595 32.79 0.0036
2018-05-15 2018-03-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 337,160 7,316 2.22 8,732 11.01 0.0028
2018-02-13 2017-12-31 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 329,844 36,475 12.43 7,866 32.42 0.0027
2017-11-14 2017-09-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 293,369 6,576 2.29 5,940 3.05 0.0022
2017-08-14 2017-06-30 13F ADVANCED DRAINAGE SYSTEMS IN COM 00790R104 286,793 6,960 2.49 5,764 -5.94 0.0023
2017-06-21 2017-03-31 13F/A-1 ADVANCED DRAINAGE SYSTEMS COM 00790R104 279,833 17,849 6.81 6,128 13.57 0.0025
2017-05-12 2017-03-31 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 279,833 6,128
2017-02-14 2016-12-31 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 261,984 10,054 3.99 5,396 -10.97 0.0025
2016-11-10 2016-09-30 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 251,930 2,796 1.12 6,061 -11.10 0.0031
2016-08-12 2016-06-30 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 249,134 32,936 15.23 6,818 48.06 0.0037
2016-05-13 2016-03-31 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 216,198 8,863 4.27 4,605 -7.57 0.0024
2016-02-12 2015-12-31 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 207,335 25,490 14.02 4,982 -5.29 0.0028
2015-11-13 2015-09-30 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 181,845 26,388 16.97 5,260 15.38 0.0032
2015-08-14 2015-06-30 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 155,457 17,721 12.87 4,559 10.60 0.0026
2015-05-14 2015-03-31 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 137,736 3,496 2.60 4,122 33.66 0.0024
2015-02-12 2014-12-31 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 134,240 108,817 428.03 3,084 479.70 0.0018
2014-11-14 2014-09-30 13F ADVANCED DRAINAGE SYSTEMS COM 00790R104 25,423 25,423 -89.98 532 -91.92 0.0003
2014-02-14 2013-12-31 13F WMS INDS INC COM COM 929297109 0 -253,622 -100.00 0 -100.00
2013-11-14 2013-09-30 13F WMS INDS INC COM COM 929297109 253,622 33,004 14.96 6,581 16.93 0.0053
2013-08-14 2013-06-30 13F WMS INDS INC COM COM 929297109 220,618 220,618 5,628 0.0049
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.