Advanced Drainage Systems, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionWinton Capital Group Ltd
Latest Disclosed Ownership40,298 shares
Latest Disclosed Value $ 5,526,065
Winton Capital Group Ltd ownership in WMS / Advanced Drainage Systems, Inc.

On May 12, 2026 - Winton Capital Group Ltd filed a 13F-HR form disclosing ownership of 40,298 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $5,526,065 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 14, 2023 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-12 2026-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 40,298 40,298 5,526 0.1939
2023-08-14 2023-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -9,799 -100.00 0 -100.00
2023-05-12 2023-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 9,799 9,799 825 0.0503
2021-02-12 2020-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -6,761 -100.00 0 -100.00
2020-10-30 2020-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,761 -24,073 -78.07 422 -72.29 0.0137
2020-08-05 2020-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 30,834 -6,856 -18.19 1,523 37.21 0.0393
2020-05-11 2020-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 37,690 -13,162 -25.88 1,110 -43.80 0.0293
2020-02-13 2019-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 50,852 21,068 70.74 1,975 105.52 0.0277
2019-11-08 2019-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 29,784 18,352 160.53 961 156.27 0.0114
2019-07-08 2019-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 11,432 11,432 375 0.0073
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.