Advanced Drainage Systems, Inc.
DE ˙ XTRA ˙ US00790R1041
113,00 € ↑0,80 (0,71%)
2026-06-05
DEL PRIS
SecurityDE:6DA / Advanced Drainage Systems, Inc.
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership7,125 shares
Latest Disclosed Value $ 977,051
Lazard Asset Management Llc reports 37.26% increase in ownership of 6DA / Advanced Drainage Systems, Inc.

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 7,125 shares of Advanced Drainage Systems, Inc. (DE:6DA) valued at $844,312 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,191 shares of Advanced Drainage Systems, Inc.. This represents a change in shares of 37.26% during the quarter. The current value of the position is $805,125 USD.

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 7,125 1,934 37.26 977 30.09 0.0008
2026-02-17 2025-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 5,191 -5,571 -51.77 752 -49.66 0.0013
2025-11-14 2025-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 10,762 -153 -1.40 1,493 149,100.00 0.0020
2025-08-14 2025-06-30 13F ADVANCED DRAINA Common Stock 00790R104 10,915 -4,287 -28.20 1 0.00 0.0017
2025-05-15 2025-03-31 13F ADVANCED DRAINA Common Stock 00790R104 15,202 5,054 49.80 2 0.00 0.0025
2025-02-14 2024-12-31 13F ADVANCED DRAINA Common Stock 00790R104 10,148 -1,664 -14.09 1 0.00 0.0017
2024-11-14 2024-09-30 13F ADVANCED DRAINA Common Stock 00790R104 11,812 -484 -3.94 2 0.00 0.0025
2024-08-14 2024-06-30 13F ADVANCED DRAINA Common Stock 00790R104 12,296 264 2.19 2 -50.00 0.0025
2024-07-09 2024-03-31 13F/A-1 ADVANCED DRAINA Common Stock 00790R104 12,032 6,500 117.50 2 0.0025
2024-05-14 2024-03-31 13F ADVANCED DRAINA Common Stock 00790R104 12,032 6,500 2 0.0025
2024-02-14 2023-12-31 13F ADVANCED DRAINA Common Stock 00790R104 5,532 1,581 40.02 1 0.0010
2023-11-14 2023-09-30 13F ADVANCED DRAINA Common Stock 00790R104 3,951 2,053 108.17 0 0.0006
2023-08-15 2023-06-30 13F ADVANCED DRAINA Common Stock 00790R104 1,898 -15 -0.78 0 0.0003
2023-05-15 2023-03-31 13F ADVANCED DRAINA Common Stock 00790R104 1,913 -880 -31.51 0 -100.00 0.0002
2023-02-15 2022-12-31 13F ADVANCED DRAINA Common Stock 00790R104 2,793 -22,418 -88.92 228 -92.73 0.0003
2022-11-14 2022-09-30 13F ADVANCED DRAINA Common Stock 00790R104 25,211 23,700 1,568.50 3,135 2,222.22 0.0046
2022-08-09 2022-06-30 13F ADVANCED DRAINA Common Stock 00790R104 1,511 379 33.48 135 0.75 0.0002
2022-05-13 2022-03-31 13F ADVANCED DRAINA Common Stock 00790R104 1,132 561 98.25 134 74.03 0.0002
2022-02-09 2021-12-31 13F ADVANCED DRAINA Common Stock 00790R104 571 -11,599 -95.31 77 -94.15 0.0001
2021-11-15 2021-09-30 13F ADVANCED DRAINA Common Stock 00790R104 12,170 11,228 1,191.93 1,316 1,107.34 0.0015
2021-08-12 2021-06-30 13F ADVANCED DRAINA Common Stock 00790R104 942 98 11.61 109 25.29 0.0001
2021-05-14 2021-03-31 13F ADVANCED DRAINA Common Stock 00790R104 844 844 87 0.0001
2020-11-13 2020-09-30 13F ADVANCED DRAINA Common Stock 00790R104 0 -1,574 -100.00 0 -100.00
2020-08-13 2020-06-30 13F ADVANCED DRAINA Common Stock 00790R104 1,574 1,574 77 0.0001
2020-05-14 2020-03-31 13F ADVANCED DRAINA Common Stock 00790R104 0 -741 -100.00 0 -100.00
2020-02-13 2019-12-31 13F ADVANCED DRAINA Common Stock 00790R104 741 741 28 0.0000
2016-05-12 2016-03-31 13F ADVANCED DRAINA Common Stock 00790R104 0 0 0 0.0000
2019-07-15 2015-09-30 13F/A-1 ADVANCED DRAINA Common Stock 00790R104 0 -182,044 -100.00 0 -100.00
2019-07-08 2015-06-30 13F/A-1 ADVANCED DRAINA Common Stock 00790R104 182,044 -331,568 -64.56 5,339 -65.28 0.0112
2015-08-13 2015-06-30 13F ADVANCED DRAINA Common Stock 00790R104 181,869 5,334
2015-06-09 2015-03-31 13F/A-1 ADVANCED DRAINA Common Stock 00790R104 513,612 -95,610 -15.69 15,377 9.84 0.0331
2015-05-15 2015-03-31 13F ADVANCED DRAINA Common Stock 00790R104 513,612 15,377
2019-08-29 2014-12-31 13F/A-3 ADVANCED DRAINA Common Stock 00790R104 609,222 -145,152 -19.24 13,999 -11.42 0.0299
2015-05-20 2014-12-31 13F/A-1 ADVANCED DRAINA Common Stock 00790R104 602,154 -7,068 13,837 0.0266
2015-06-09 2014-12-31 13F/A-2 ADVANCED DRAINA Common Stock 00790R104 608,879 6,725 13,992 0.0319
2015-02-12 2014-12-31 13F ADVANCED DRAINA Common Stock 00790R104 602,497 13,845
2014-11-07 2014-09-30 13F ADVANCED DRAINA Common Stock 00790R104 754,374 754,374 15,804 0.0339
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.