Advanced Drainage Systems, Inc.
MX ˙ BMV ˙ US00790R1041
SecurityMX:WMS / Advanced Drainage Systems, Inc.
InstitutionFmr Llc
Latest Disclosed Ownership2,404,661 shares
Ownership 4.32%
Fmr Llc ownership in WMS / Advanced Drainage Systems, Inc.

2012-02-14 - Fmr Llc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,404,661 shares of Advanced Drainage Systems, Inc. (MX:WMS). This represents 4.315 percent ownership of the company.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2012-02-14 2012-02-14 13G/A 2,404,661 4.32

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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 92,469 16,405 21.57 12,680 15.11 0.0001
2026-02-17 2025-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 76,064 -1,544 -1.99 11,016 2.34 0.0006
2025-11-13 2025-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 77,608 3,687 4.99 10,764 26.78 0.0006
2025-08-14 2025-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 73,921 1,064 1.46 8,491 7.26 0.0005
2025-05-12 2025-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 72,857 15,305 26.59 7,916 18.97 0.0005
2025-02-13 2024-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 57,552 3,211 5.91 6,653 -22.10 0.0004
2024-11-13 2024-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 54,341 18,313 50.83 8,540 47.80 0.0005
2024-08-13 2024-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 36,028 11,008 44.00 5,779 34.09 0.0004
2024-05-13 2024-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 25,020 255 1.03 4,309 23.75 0.0003
2024-02-13 2023-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 24,765 -468 -1.85 3,483 21.24 0.0003
2023-11-13 2023-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 25,233 186 0.74 2,872 0.81 0.0002
2023-08-11 2023-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 25,047 -8,774 -25.94 2,850 0.04 0.0002
2023-08-11 2023-03-31 13F/A-1 ADVANCED DRAIN SYS INC DEL COM 00790R104 33,821 -146 -0.43 2,848 2.30 0.0003
2023-05-11 2023-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 33,821 -146 2,848 0.0001
2023-02-13 2022-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 33,967 -9,019 -20.98 2,784 -47.93 0.0003
2022-11-10 2022-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 42,986 2,591 6.41 5,347 46.98 0.0006
2022-08-12 2022-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 40,395 380 0.95 3,638 -23.47 0.0004
2022-05-13 2022-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 40,015 -44,544 -52.68 4,754 -58.70 0.0004
2022-02-14 2021-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 84,559 -22,685 -21.15 11,510 -0.78 0.0008
2022-02-14 2021-09-30 13F/A-1 ADVANCED DRAIN SYS INC DEL COM 00790R104 107,244 15,435 16.81 11,600 8.39 0.0009
2021-11-15 2021-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 107,244 15,435 11,600 0.0009
2021-08-13 2021-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 91,809 -11,163 -10.84 10,702 0.53 0.0008
2021-05-14 2021-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 102,972 34,329 50.01 10,646 85.57 0.0009
2021-02-08 2020-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 68,643 55,006 403.36 5,737 573.36 0.0005
2020-11-13 2020-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 13,637 9,082 199.39 852 278.67 0.0001
2020-08-24 2020-06-30 13F/A-1 ADVANCED DRAIN SYS INC DEL COM 00790R104 4,555 3,800 503.31 225 922.73 0.0000
2020-08-13 2020-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 4,555 3,800 225 5.5276
2020-05-14 2020-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 755 -28 -3.58 22 -29.03 0.0000
2020-02-07 2019-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 783 202 34.77 31 72.22 0.0000
2019-11-13 2019-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 581 -128 -18.05 18 -21.74 0.0000
2019-08-13 2019-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 709 -553 -43.82 23 -28.12 0.0000
2019-05-13 2019-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,262 78 6.59 32 10.34 0.0000
2019-02-13 2018-12-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,184 120 11.28 29 -12.12 0.0000
2018-11-09 2018-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 1,064 1,064 33 0.0000
2017-11-13 2017-09-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -12,200 -100.00 0 -100.00
2017-08-29 2017-06-30 13F/A-1 ADVANCED DRAIN SYS INC DEL COM 00790R104 12,200 12,200 245 0.0000
2017-08-11 2017-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 12,200 12,200 245
2015-08-13 2015-06-30 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 0 -14,500 -100.00 0 -100.00
2015-05-14 2015-03-31 13F ADVANCED DRAIN SYS INC DEL COM 00790R104 14,500 14,500 434 0.0001
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.