Position in WLK
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$77,005,364
-$6,589,392 QoQ
Shares Held
1,054,868
+47.4% QoQ
Ownership
0.825%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#12
of 358 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in WLK Over Time
Shares Held
Position Value (USD)
Derivatives in WLK
reported options exposure · as of Jun 30, 2026CallValue
$5,387,400
CallShares
73,800
PutValue
$1,664,400
PutShares
22,800
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 Specialty Chemicals
Basic Materials · as of Jun 30, 2026CITADEL ADVISORS LLC holds $1,679,326,621 across 48 Specialty Chemicals names. WLK ranks #8 (4.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SHW |
Sherwin Williams Co
|
1,029,152 | $354,357,616 | |
| 2 | ECL |
Ecolab Inc.
|
1,056,715 | $294,411,365 | |
| 3 | RPM |
Rpm International Inc/De/
|
1,556,711 | $173,028,427 | |
| 4 | APD |
Air Products & Chemicals, Inc.
|
463,285 | $135,825,895 | |
| 5 | LYB |
LyondellBasell Industries N.V.
|
2,430,888 | $127,986,252 | |
| 6 | LIN |
Linde PLC
|
245,593 | $127,448,030 | |
| 7 | ALB |
Albemarle Corp
|
875,071 | $118,160,836 | |
| 8 | WLK |
Westlake Corp
This page
|
1,054,868 | $77,005,364 |
All Filings in WLK
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $77,005,364 | 1,054,868 | Shares | Defined | 2026-08-14 | |
| 2026-06-30 | $5,387,400 | 73,800 | Call | Defined | 2026-08-14 | |
| 2026-06-30 | $1,664,400 | 22,800 | Put | Defined | 2026-08-14 | |
| 2026-03-31 | $83,594,756 | 715,586 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $7,301,250 | 62,500 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $8,072,262 | 69,100 | Call | Defined | 2026-05-15 | |
| 2025-12-31 | $7,756,306 | 104,900 | Put | Defined | 2026-02-17 | |
| 2025-12-31 | $15,032,223 | 203,303 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $4,332,884 | 58,600 | Call | Defined | 2026-02-17 | |
| 2025-09-30 | $4,276,830 | 55,500 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $1,356,256 | 17,600 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $92,537,577 | 1,200,851 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $934,394 | 12,306 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $3,378,885 | 44,500 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $2,141,226 | 28,200 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $4,591,377 | 45,900 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $85,311,185 | 852,856 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $1,140,342 | 11,400 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $77,999,949 | 680,331 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $5,434,410 | 47,400 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $4,597,465 | 40,100 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $9,287,922 | 61,800 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $5,936,455 | 39,500 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $78,805,012 | 524,353 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $4,721,132 | 32,600 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $83,703,497 | 577,983 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $6,227,260 | 43,000 | Put | Defined | 2024-08-14 | |
| 2024-03-31 | $85,899,576 | 562,170 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $2,185,040 | 14,300 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $8,373,440 | 54,800 | Call | Defined | 2024-05-15 | |
| 2023-12-31 | $81,243,700 | 580,478 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $2,673,236 | 19,100 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $1,903,456 | 13,600 | Put | Defined | 2024-02-14 | |
| 2023-09-30 | $96,077,434 | 770,654 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $1,907,451 | 15,300 | Put | Defined | 2023-11-14 | |
| 2023-09-30 | $4,762,394 | 38,200 | Call | Defined | 2023-11-14 | |
| 2023-06-30 | $3,572,153 | 29,900 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $99,560,204 | 833,349 | Shares | Defined | 2023-08-14 | |
| 2023-06-30 | $6,081,023 | 50,900 | Call | Defined | 2023-08-14 | |
| 2023-03-31 | $3,131,460 | 27,000 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $142,235,088 | 1,226,376 | Shares | Defined | 2023-05-15 | |
| 2023-03-31 | $2,110,836 | 18,200 | Put | Defined | 2023-05-15 | |
| 2022-12-31 | $4,583,538 | 44,700 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $36,410,005 | 355,081 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $4,060,584 | 39,600 | Call | Defined | 2023-02-14 | |
| 2022-09-30 | $2,657,223 | 30,585 | Shares | Defined | 2022-11-14 | |
| 2022-09-30 | $10,408,224 | 119,800 | Call | Defined | 2022-11-14 | |
| 2022-09-30 | $2,615,088 | 30,100 | Put | Defined | 2022-11-14 | |
| 2022-06-30 | $3,803,176 | 38,800 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $5,057,832 | 51,600 | Call | Defined | 2022-08-15 | |
| No filing history on record for this holder in this stock. | ||||||