Position in ZWS
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$1,439,364
-$52,965 QoQ
Shares Held
32,100
0.0% QoQ
Ownership
0.019%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2021
18 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ZWS Over Time
Shares Held
Position Value (USD)
Position in Pollution & Treatment Controls
Industrials · as of Mar 31, 2026GABELLI FUNDS LLC holds $3,872,701 across 5 Pollution & Treatment Controls names. ZWS ranks #2 (37.2% of the industry book) .
All Filings in ZWS
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18 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,439,364 | 32,100 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $1,492,329 | 32,100 | Shares | Sole | 2026-02-05 | |
| 2025-09-30 | $1,556,693 | 33,100 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $1,210,467 | 33,100 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $1,091,638 | 33,100 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $1,234,630 | 33,100 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $1,189,614 | 33,100 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $973,140 | 33,100 | Shares | Sole | 2024-08-13 | |
| 2024-03-31 | $1,107,857 | 33,100 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $973,471 | 33,100 | Shares | Sole | 2024-02-13 | |
| 2023-09-30 | $941,472 | 33,600 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $903,504 | 33,600 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $717,696 | 33,600 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $710,640 | 33,600 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $810,950 | 33,100 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $901,644 | 33,100 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $1,171,740 | 33,100 | Shares | Sole | 2022-05-18 | |
| 2021-12-31 | $1,142,960 | 31,400 | Shares | Sole | 2022-02-11 | |
| No filing history on record for this holder in this stock. | ||||||