Position in ZWS
as of Jun 30, 2026
· filed Aug 11, 2026
Position Value
$15,290,378
+$1,928,058 QoQ
Shares Held
302,600
+1.5% QoQ
Ownership
0.181%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#58
of 434 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ZWS Over Time
Shares Held
Position Value (USD)
Position in Pollution & Treatment Controls
Industrials · as of Jun 30, 2026Swiss National Bank holds $90,051,663 across 5 Pollution & Treatment Controls names. ZWS ranks #2 (17.0% of the industry book) .
All Filings in ZWS
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $15,290,378 | 302,600 | Shares | Sole | 2026-08-11 | |
| 2026-03-31 | $13,362,320 | 298,000 | Shares | Sole | 2026-05-07 | |
| 2025-12-31 | $13,821,477 | 297,300 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $13,803,305 | 293,500 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $10,616,271 | 290,300 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $9,217,910 | 279,500 | Shares | Sole | 2025-05-12 | |
| 2024-12-31 | $10,656,610 | 285,700 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $10,300,404 | 286,600 | Shares | Sole | 2024-11-07 | |
| 2024-06-30 | $8,455,440 | 287,600 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $9,696,259 | 289,700 | Shares | Sole | 2024-05-07 | |
| 2023-12-31 | $8,520,077 | 289,700 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $9,137,322 | 326,100 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $8,747,317 | 325,300 | Shares | Sole | 2023-08-09 | |
| 2023-03-31 | $8,195,832 | 383,700 | Shares | Sole | 2023-05-10 | |
| 2022-12-31 | $9,077,580 | 429,200 | Shares | Sole | 2023-02-08 | |
| 2022-09-30 | $7,318,150 | 298,700 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $8,068,488 | 296,200 | Shares | Sole | 2022-08-09 | |
| 2022-03-31 | $10,156,260 | 286,900 | Shares | Sole | 2022-05-09 | |
| 2021-12-31 | $9,704,240 | 266,600 | Shares | Sole | 2022-02-08 | |
| 2021-09-30 RXN | — | 264,600 | Shares | Sole | 2021-11-08 | |
| 2021-06-30 RXN | — | 263,600 | Shares | Sole | 2021-08-06 | |
| 2021-03-31 RXN | — | 274,800 | Shares | Sole | 2021-05-07 | |
| 2020-12-31 RXN | — | 272,800 | Shares | Sole | 2021-02-05 | |
| 2020-09-30 RXN | — | 271,900 | Shares | Sole | 2020-11-09 | |
| 2020-06-30 RXN | — | 271,900 | Shares | Sole | 2020-08-05 | |
| 2020-03-31 RXN | — | 236,500 | Shares | Sole | 2020-05-08 | |
| No filing history on record for this holder in this stock. | ||||||