Position in ZWS
as of Mar 31, 2026
· filed May 12, 2026
Position Value
$23,348,321
+$23,060,549 QoQ
Shares Held
520,703
+8312.0% QoQ
Ownership
0.312%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2022
16 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)
Derivatives in ZWS
reported options exposure · as of Jun 30, 2025CallValue
$285,246
CallShares
7,800
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Pollution & Treatment Controls
Industrials · as of Mar 31, 2026JANE STREET GROUP, LLC holds $26,287,761 across 5 Pollution & Treatment Controls names. ZWS ranks #1 (88.8% of the industry book) .
All Filings in ZWS
Export CSV
18 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $23,348,321 | 520,703 | Shares | Defined | 2026-05-12 | |
| 2025-12-31 | $287,772 | 6,190 | Shares | Defined | 2026-02-12 | |
| 2025-09-30 | $8,460,320 | 179,892 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $285,246 | 7,800 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $2,805,065 | 76,704 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $1,667,963 | 50,575 | Shares | Defined | 2025-05-19 | |
| 2025-03-31 | $257,244 | 7,800 | Call | Defined | 2025-05-19 | |
| 2024-09-30 | $3,288,041 | 91,487 | Shares | Defined | 2024-11-15 | |
| 2024-06-30 | $6,102,028 | 207,552 | Shares | Defined | 2024-08-15 | |
| 2024-03-31 | $2,585,490 | 77,248 | Shares | Defined | 2024-05-16 | |
| 2023-12-31 | $3,587,137 | 121,970 | Shares | Defined | 2024-02-15 | |
| 2023-09-30 | $1,070,587 | 38,208 | Shares | Defined | 2023-11-15 | |
| 2023-06-30 | $1,164,605 | 43,310 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $891,651 | 41,744 | Shares | Defined | 2023-05-16 | |
| 2022-12-31 | $860,127 | 40,668 | Shares | Defined | 2023-02-15 | |
| 2022-09-30 | $572,197 | 23,355 | Shares | Defined | 2022-11-15 | |
| 2022-06-30 | $1,612,825 | 59,208 | Shares | Defined | 2022-08-16 | |
| 2022-03-31 | $875,088 | 24,720 | Shares | Defined | 2022-05-17 | |
| No filing history on record for this holder in this stock. | ||||||