Position in ARQ
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$0
-$207,320 QoQ
Shares Held
0
-100.0% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2021
17 quarters on record
Common Shares in ARQ Over Time
Shares Held
Position Value (USD)
Derivatives in ARQ
reported options exposure · as of Mar 31, 2026CallValue
$28,416
CallShares
11,100
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, 2026CITADEL ADVISORS LLC holds $43,513,766 across 8 Pollution & Treatment Controls names.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VLTO |
Veralto Corp
|
185,893 | $16,436,658 | |
| 2 | CECO |
Ceco Environmental Corp
|
217,386 | $12,951,857 | |
| 3 | ZWS |
Zurn Elkay Water Solutions Corp
|
166,123 | $7,448,954 | |
| 4 | ERII |
Energy Recovery, Inc.
|
449,436 | $4,525,820 | |
| 5 | PCT |
PureCycle Technologies, Inc.
|
342,774 | $1,778,996 | |
| 6 | FTEK |
Fuel Tech, Inc.
|
221,399 | $270,106 | |
| 7 | BCHT |
Birchtech Corp.
|
50,994 | $96,888 | |
| 8 | ZONE |
CleanCore Solutions, Inc.
|
12,605 | $4,487 |
All Filings in ARQ
Export CSV
40 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $28,416 | 11,100 | Call | Defined | 2026-05-15 | |
| 2025-12-31 | $207,320 | 63,401 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $1,451,274 | 202,692 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $824,832 | 115,200 | Call | Defined | 2025-11-14 | |
| 2025-06-30 | $240,039 | 44,700 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $1,115,671 | 207,760 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $156,792 | 37,600 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $1,246,074 | 298,819 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $90,072 | 21,600 | Put | Defined | 2025-05-15 | |
| 2024-12-31 | $76,593 | 10,118 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $12,112 | 1,600 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $710,066 | 93,800 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $55,765 | 9,500 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $214,842 | 36,600 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $57,613 | 9,815 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $122,007 | 20,100 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $203,345 | 33,500 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $117,957 | 19,433 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $272,341 | 42,028 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $123,120 | 19,000 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $80,352 | 12,400 | Put | Defined | 2024-05-15 | |
| 2023-12-31 | $4,470 | 1,500 | Put | Defined | 2024-02-14 | |
| 2023-12-31 | $156,851 | 52,635 | Shares | Defined | 2024-02-14 | |
| 2023-06-30 | $131,289 | 70,586 | Shares | Defined | 2023-08-14 | |
| 2023-06-30 | $744 | 400 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $17,484 | 9,400 | Call | Defined | 2023-08-14 | |
| 2023-03-31 | $396 | 200 | Put | Defined | 2023-05-15 | |
| 2023-03-31 | $122,438 | 61,838 | Shares | Defined | 2023-05-15 | |
| 2023-03-31 | $198 | 100 | Call | Defined | 2023-05-15 | |
| 2022-12-31 | $140,186 | 57,690 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $5,832 | 2,400 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $2,916 | 1,200 | Call | Defined | 2023-02-14 | |
| 2022-03-31 | $261,905 | 42,107 | Shares | Defined | 2022-05-16 | |
| 2022-03-31 | $129,998 | 20,900 | Put | Defined | 2022-05-16 | |
| 2021-12-31 | $68,848 | 10,400 | Call | Defined | 2022-02-14 | |
| 2021-12-31 | $246,508 | 37,237 | Shares | Defined | 2022-02-14 | |
| 2021-12-31 | $119,822 | 18,100 | Put | Defined | 2022-02-14 | |
| 2021-09-30 | $157,174 | 24,597 | Shares | Defined | 2021-11-15 | |
| 2021-09-30 | $167,418 | 26,200 | Call | Defined | 2021-11-15 | |
| 2021-06-30 | $446,222 | 60,219 | Shares | Defined | 2021-08-16 | |
| No filing history on record for this holder in this stock. | ||||||