Advanced Drainage Systems, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionTwo Sigma Investments, Lp
ManagerJohn Overdeck, David Siegel
Latest Disclosed Ownership3,813 shares
Latest Disclosed Value $ 522,877
Two Sigma Investments, Lp ownership in WMS / Advanced Drainage Systems, Inc.

On May 15, 2026 - Two Sigma Investments, Lp filed a 13F-HR form disclosing ownership of 3,813 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $522,877 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 15, 2025 disclosing 0 shares of Advanced Drainage Systems, Inc..

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 INC DEL COM 00790R104 3,813 3,813 523 0.0004
2025-05-15 2025-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -4,632 -100.00 0 -100.00
2025-02-14 2024-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,632 4,632 535 0.0012
2024-08-14 2024-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -6,103 -100.00 0 -100.00
2024-05-15 2024-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,103 -13,597 -69.02 1,051 -62.06 0.0025
2024-02-14 2023-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 19,700 -29 -0.15 2,771 23.39 0.0064
2023-11-14 2023-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 19,729 11 0.06 2,246 0.09 0.0060
2023-08-14 2023-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 19,718 1,818 10.16 2,244 48.84 0.0056
2023-05-15 2023-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 17,900 8,700 94.57 1,507 99.87 0.0043
2023-02-14 2022-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 9,200 1,606 21.15 754 -20.13 0.0024
2022-11-14 2022-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 7,594 7,594 944 0.0032
2020-11-16 2020-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -21,614 -100.00 0 -100.00
2020-08-14 2020-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 21,614 -171,262 -88.79 1,068 -81.19 0.0053
2020-05-15 2020-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 192,876 -295,294 -60.49 5,678 -70.05 0.0462
2020-02-14 2019-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 488,170 -15,572 -3.09 18,961 16.64 0.0570
2019-11-14 2019-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 503,742 446,552 780.82 16,256 766.99 0.0547
2019-08-14 2019-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 57,190 -138,579 -70.79 1,875 -62.83 0.0063
2019-05-15 2019-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 195,769 134,211 218.02 5,045 237.91 0.0164
2019-02-14 2018-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 61,558 -143,628 -70.00 1,493 -76.45 0.0058
2018-11-14 2018-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 205,186 -50,972 -19.90 6,340 -13.31 0.0173
2018-08-14 2018-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 256,158 153,295 149.03 7,313 174.51 0.0218
2018-05-15 2018-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 102,863 24,704 31.61 2,664 42.92 0.0089
2018-02-14 2017-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 78,159 66,030 544.40 1,864 657.72 0.0061
2017-11-14 2017-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 12,129 12,129 246 0.0009
2017-08-14 2017-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -104,062 -100.00 0 -100.00
2017-05-15 2017-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 104,062 -37,450 -26.46 2,279 -21.82 0.0077
2017-02-14 2016-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 141,512 141,512 2,915 0.0112
2016-08-15 2016-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -63,227 -100.00 0 -100.00
2016-05-16 2016-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 63,227 -38,664 -37.95 1,347 -44.98 0.0064
2016-02-16 2015-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 101,891 101,891 0.00 2,448 0.0117
2015-11-16 2015-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -27,121 -100.00 0 -100.00
2016-02-09 2015-06-30 13F/A-1 ADVANCED DRAIN SYS INC DEL COM 00790R104 27,121 27,121 -80.77 795 -78.27 0.0039
2015-08-14 2015-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 27,121 795
2014-02-14 2013-12-31 13F WMS INDS COM 929297109 0 -141,031 -100.00 0 -100.00
2013-11-14 2013-09-30 13F WMS INDS COM 929297109 141,031 104,317 284.13 3,659 290.50 0.0233
2013-08-14 2013-06-30 13F WMS INDS COM 929297109 36,714 36,714 937 0.0065
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.