Position in ARQ
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$1,298,523
+$812,405 QoQ
Shares Held
509,225
+168.2% QoQ
Ownership
1.17%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#8
of 100 holders
Holding Since
Jun 2021
11 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ARQ Over Time
Shares Held
Position Value (USD)
Derivatives in ARQ
reported options exposure · as of Mar 31, 2026CallValue
$29,440
CallShares
11,500
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 Jun 30, 2026JANE STREET GROUP, LLC holds $6,391,909 across 9 Pollution & Treatment Controls names. ARQ ranks #2 (20.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ZWS |
Zurn Elkay Water Solutions Corp
|
43,688 | $2,207,553 | |
| 2 | ARQ |
Arq, Inc.
This page
|
509,225 | $1,298,523 | |
| 3 | ADUR |
Aduro Clean Technologies Inc.
|
73,490 | $1,158,202 | |
| 4 | ZONE |
CleanCore Solutions, Inc.
|
731,844 | $600,111 | |
| 5 | VLTO |
Veralto Corp
|
5,206 | $461,667 | |
| 6 | ERII |
Energy Recovery, Inc.
|
41,585 | $375,096 | |
| 7 | FTEK |
Fuel Tech, Inc.
|
109,483 | $241,957 | |
| 8 | CLWT |
Euro Tech Holdings Co Ltd
|
21,230 | $36,302 |
All Filings in ARQ
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14 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,298,523 | 509,225 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $486,118 | 189,890 | Shares | Defined | 2026-05-12 | |
| 2026-03-31 | $29,440 | 11,500 | Call | Defined | 2026-05-12 | |
| 2025-12-31 | $242,712 | 74,224 | Shares | Defined | 2026-02-12 | |
| 2025-12-31 | $43,164 | 13,200 | Call | Defined | 2026-02-12 | |
| 2025-09-30 | $245,588 | 34,300 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $764,715 | 106,804 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $93,373 | 17,388 | Shares | Defined | 2025-08-14 | |
| 2024-09-30 | $178,659 | 30,436 | Shares | Defined | 2024-11-15 | |
| 2024-06-30 | $80,098 | 13,196 | Shares | Defined | 2024-08-15 | |
| 2024-03-31 | $425,022 | 65,590 | Shares | Defined | 2024-05-16 | |
| 2023-12-31 | $30,920 | 10,376 | Shares | Defined | 2024-02-15 | |
| 2023-06-30 | $21,265 | 11,433 | Shares | Defined | 2023-08-14 | |
| 2021-06-30 | $186,895 | 25,222 | Shares | Defined | 2021-08-16 | |
| No filing history on record for this holder in this stock. | ||||||