Montanaro Asset Management Ltd
Position in WMS — Advanced Drainage Systems, Inc.
CIK 1831133
LONDON, X0
Position in WMS
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$2,809,584
+$1,328,580 QoQ
Shares Held
17,900
+65.7% QoQ
Ownership
0.024%
of shares outstanding
% of Portfolio
0.89%
of 13F equity value
Holder Rank
#200
of 543 holders
Holding Since
Sep 2021
20 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in WMS Over Time
Shares Held
Position Value (USD)
Position in Building Products & Equipment
Industrials · as of Jun 30, 2026Montanaro Asset Management Ltd holds $2,809,584 across 1 Building Products & Equipment name. WMS ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | WMS |
Advanced Drainage Systems, Inc.
This page
|
17,900 | $2,809,584 |
All Filings in WMS
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20 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $2,809,584 | 17,900 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $1,481,004 | 10,800 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $2,360,729 | 16,300 | Shares | Sole | 2026-03-10 | |
| 2025-09-30 | $3,689,420 | 26,600 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $4,341,708 | 37,800 | Shares | Sole | 2025-08-05 | |
| 2025-03-31 | $4,128,700 | 38,000 | Shares | Sole | 2025-05-13 | |
| 2024-12-31 | $7,826,120 | 67,700 | Shares | Sole | 2025-02-12 | |
| 2024-09-30 | $13,107,144 | 83,400 | Shares | Sole | 2024-11-04 | |
| 2024-06-30 | $14,306,788 | 89,200 | Shares | Sole | 2024-07-30 | |
| 2024-03-31 | $15,587,720 | 90,500 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $13,149,840 | 93,500 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $14,627,155 | 128,500 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $17,294,560 | 152,000 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $13,852,545 | 164,500 | Shares | Sole | 2023-04-18 | |
| 2022-12-31 | $11,229,890 | 137,000 | Shares | Sole | 2023-02-08 | |
| 2022-09-30 | $20,147,940 | 162,000 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $19,680,295 | 218,500 | Shares | Sole | 2022-08-05 | |
| 2022-03-31 | $26,078,795 | 219,500 | Shares | Sole | 2022-05-12 | |
| 2021-12-31 | $26,205,025 | 192,500 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $10,330,235 | 95,500 | Shares | Sole | 2021-11-15 | |
| No filing history on record for this holder in this stock. | ||||||