고급 배수 시스템, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionQuadrant Capital Group Llc
Latest Disclosed Ownership6,258 shares
Latest Disclosed Value $ 858,160
Quadrant Capital Group Llc reports 3.70% increase in ownership of WMS / Advanced Drainage Systems, Inc.

On May 13, 2026 - Quadrant Capital Group Llc filed a 13F-HR/A form disclosing ownership of 6,258 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $858,160 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 6,035 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of 3.70% 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/A-1 ADVANCED DRAIN SYS INC DEL COM 00790R104 6,258 223 3.70 858 -1.83 0.0257
2026-05-11 2026-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,258 223 49 0.0369
2026-02-12 2025-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,035 19 0.32 874 4.80 0.0264
2025-11-13 2025-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,016 -39 -0.64 834 20.00 0.0271
2025-08-13 2025-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,055 2,602 75.35 695 85.33 0.0250
2025-05-13 2025-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,453 2,782 414.61 375 387.01 0.0139
2025-02-13 2024-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 671 46 7.36 78 -21.43 0.0053
2024-11-12 2024-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 625 -58 -8.49 98 -10.09 0.0068
2024-08-12 2024-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 683 185 37.15 110 28.24 0.0081
2024-05-15 2024-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 498 17 3.53 86 26.87 0.0068
2024-02-08 2023-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 481 43 9.82 68 36.73 0.0058
2023-11-14 2023-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 438 136 45.03 50 44.12 0.0050
2023-08-10 2023-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 302 244 420.69 34 750.00 0.0034
2023-05-11 2023-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 58 -78 -57.35 5 -63.64 0.0005
2023-02-13 2022-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 136 -7 -4.90 11 -38.89 0.0013
2022-11-10 2022-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 143 23 19.17 18 63.64 0.0024
2022-08-09 2022-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 120 -15 -11.11 11 -31.25 0.0015
2022-05-06 2022-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 135 121 864.29 16 700.00 0.0019
2022-02-01 2021-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 14 -2 -12.50 2 0.00 0.0002
2021-11-12 2021-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 16 -10 -38.46 2 -33.33 0.0003
2021-08-09 2021-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 26 3 13.04 3 50.00 0.0004
2021-05-12 2021-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 23 15 187.50 2 100.00 0.0003
2021-02-16 2020-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 8 0 0.00 1 0.0002
2020-11-13 2020-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 8 4 100.00 0 0.0000
2020-08-13 2020-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4 4 0 0.0000
2017-01-11 2016-12-31 13F Advanced Drain Sys Inc Del Com COM 00790R104 0 -262 -100.00 0 -100.00
2016-10-25 2016-09-30 13F Advanced Drain Sys Inc Del Com COM 00790R104 262 0 0.00 6 -14.29 0.0039
2016-07-28 2016-06-30 13F Advanced Drain Sys Inc Del Com COM 00790R104 262 0 0.00 7 40.00 0.0048
2016-04-27 2016-03-31 13F Advanced Drain Sys Inc Del Com COM 00790R104 262 262 5 0.0032
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.