Advanced Drainage Systems, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionBalyasny Asset Management Llc
Latest Disclosed Ownership3,067 shares
Latest Disclosed Value $ 420,578
Balyasny Asset Management Llc reports 99.33% decrease in ownership of WMS / Advanced Drainage Systems, Inc.

On May 15, 2026 - Balyasny Asset Management Llc filed a 13F-HR form disclosing ownership of 3,067 shares of Advanced Drainage Systems, Inc. (MX:WMS) valued at $420,578 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 458,910 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of -99.33% 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.

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)
2026-05-15 2026-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 3,067 -455,843 -99.33 421 -99.37 0.0005
2026-02-17 2025-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 458,910 411,883 875.84 66,464 919.06 0.0844
2025-11-14 2025-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 47,027 47,027 6,523 0.0083
2025-02-14 2024-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -49,265 -100.00 0 -100.00
2024-11-14 2024-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 49,265 -15,394 -23.81 7,742 -25.34 0.0126
2024-08-14 2024-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 64,659 55,373 596.31 10,371 548.53 0.0181
2024-05-13 2024-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 9,286 9,286 1,599 0.0028
2024-02-14 2023-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -102,283 -100.00 0 -100.00
2023-11-14 2023-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 102,283 55,647 119.32 11,643 119.41 0.0238
2023-08-14 2023-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 46,636 9,716 26.32 5,306 70.67 0.0117
2023-05-15 2023-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 36,920 -190,980 -83.80 3,109 -83.36 0.0078
2023-02-14 2022-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 227,900 28,701 14.41 18,681 -24.60 0.0511
2022-11-15 2022-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 199,199 -13,572 -6.38 24,775 29.28 0.0760
2022-08-15 2022-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 212,771 -106,139 -33.28 19,164 -49.42 0.0624
2022-05-16 2022-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 318,910 256,478 410.81 37,890 345.82 0.1195
2022-02-14 2021-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 62,432 62,432 8,499 0.0291
2021-12-01 2021-09-30 13F/A-1 ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -6,444 -100.00 0 -100.00
2021-11-15 2021-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -6,444 0
2021-08-16 2021-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 6,444 -39,470 -85.97 751 -84.18 0.0036
2021-05-17 2021-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 45,914 33,912 282.55 4,747 373.28 0.0234
2021-02-16 2020-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 12,002 12,002 1,003 0.0056
2020-02-14 2019-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -14,810 -100.00 0 -100.00
2019-11-14 2019-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 14,810 14,810 478 0.0033
2015-05-15 2015-03-31 13F Advanced Drainage Systems Common Stock 00790R104 0 -154,038 -100.00 0 -100.00
2015-02-17 2014-12-31 13F Advanced Drainage Systems Common Stock 00790R104 154,038 154,038 3,540 0.0325
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.