Position in ZWS
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$13,810
New position
Shares Held
308
first reported quarter
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2026
1 quarter on record
Voting authority
Sole 100%
Shared 0%
None 0%
Position in Pollution & Treatment Controls
Industrials · as of Mar 31, 2026GROUP ONE TRADING LLC holds $150,531 across 7 Pollution & Treatment Controls names. ZWS ranks #5 (9.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | FTEK |
Fuel Tech, Inc.
|
40,215 | $49,062 | |
| 2 | ERII |
Energy Recovery, Inc.
|
4,031 | $40,592 | |
| 3 | ADUR |
Aduro Clean Technologies Inc.
|
2,432 | $25,511 | |
| 4 | CECO |
Ceco Environmental Corp
|
361 | $21,508 | |
| 5 | ZWS |
Zurn Elkay Water Solutions Corp
This page
|
308 | $13,810 | |
| 6 | CLIR |
ClearSign Technologies Corp
|
9 | $39 | |
| 7 | LIQT |
Liqtech International Inc
|
5 | $9 |
All Filings in ZWS
Export CSV
1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $13,810 | 308 | Shares | Sole | 2026-05-13 | |
| No filing history on record for this holder in this stock. | ||||||