Position in FTEK
as of Mar 31, 2026
· filed May 12, 2026
Position Value
$86,371
-$320,447 QoQ
Shares Held
70,797
-72.9% QoQ
Ownership
0.227%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2021
8 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in FTEK Over Time
Shares Held
Position Value (USD)
Derivatives in FTEK
reported options exposure · as of Dec 31, 2025CallValue
$72,696
CallShares
46,600
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 $26,374,132 across 6 Pollution & Treatment Controls names. FTEK ranks #6 (0.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ZWS |
Zurn Elkay Water Solutions Corp
|
520,703 | $23,348,321 | |
| 2 | ERII |
Energy Recovery, Inc.
|
135,473 | $1,364,211 | |
| 3 | VLTO |
Veralto Corp
|
9,175 | $811,253 | |
| 4 | ARQ |
Arq, Inc.
|
189,890 | $486,118 | |
| 5 | ADUR |
Aduro Clean Technologies Inc.
|
26,488 | $277,858 | |
| 6 | FTEK |
Fuel Tech, Inc.
This page
|
70,797 | $86,371 |
All Filings in FTEK
Export CSV
10 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $86,371 | 70,797 | Shares | Defined | 2026-05-12 | |
| 2025-12-31 | $406,818 | 260,782 | Shares | Defined | 2026-02-12 | |
| 2025-12-31 | $72,696 | 46,600 | Call | Defined | 2026-02-12 | |
| 2025-09-30 | $710,766 | 236,922 | Shares | Defined | 2025-11-14 | |
| 2022-12-31 | $14,998 | 11,810 | Shares | Defined | 2023-02-15 | |
| 2022-09-30 | $26,595 | 22,731 | Shares | Defined | 2022-11-15 | |
| 2022-06-30 | $13,597 | 10,966 | Shares | Defined | 2022-08-16 | |
| 2021-12-31 | $20,937 | 14,955 | Shares | Defined | 2022-02-15 | |
| 2021-06-30 | $34,545 | 14,700 | Put | Defined | 2021-08-16 | |
| 2021-06-30 | $98,465 | 41,900 | Call | Defined | 2021-08-16 | |
| No filing history on record for this holder in this stock. | ||||||