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Equibles

CITADEL ADVISORS LLC

Position in WLK — Westlake Corp

CIK 1423053 MIAMI, FL
Back to WLK Full portfolio

Position in WLK

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$83,594,756
+$68,562,533 QoQ
Shares Held
715,586
+252.0% QoQ
Ownership
0.559%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in WLK Over Time

Shares Held

Position Value (USD)

Derivatives in WLK

reported options exposure · as of Mar 31, 2026
CallValue
$8,072,262
CallShares
69,100
PutValue
$7,301,250
PutShares
62,500

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 Mar 31, 2026

CITADEL ADVISORS LLC holds $1,378,172,185 across 51 Specialty Chemicals names. WLK ranks #5 (6.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 APD
Air Products & Chemicals, Inc.
 1,016,233 $295,205,524
2 SHW
Sherwin Williams Co
 434,610 $139,314,235
3 DD
DuPont de Nemours, Inc.
 898,340 $123,431,916
4 LYB
LyondellBasell Industries N.V.
 1,504,143 $121,173,759
5 WLK
Westlake Corp
This page 		715,586 $83,594,756
6 RPM
Rpm International Inc/De/
 839,494 $83,445,703
7 IFF
International Flavors & Fragrances Inc
 1,102,513 $79,987,318
8 LIN
Linde PLC
 129,535 $64,218,271

All Filings in WLK

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $83,594,756 715,586
2026-03-31 $7,301,250 62,500
2026-03-31 $8,072,262 69,100
2025-12-31 $7,756,306 104,900
2025-12-31 $15,032,223 203,303
2025-12-31 $4,332,884 58,600
2025-09-30 $4,276,830 55,500
2025-09-30 $1,356,256 17,600
2025-09-30 $92,537,577 1,200,851
2025-06-30 $934,394 12,306
2025-06-30 $3,378,885 44,500
2025-06-30 $2,141,226 28,200
2025-03-31 $4,591,377 45,900
2025-03-31 $85,311,185 852,856
2025-03-31 $1,140,342 11,400
2024-12-31 $77,999,949 680,331
2024-12-31 $5,434,410 47,400
2024-12-31 $4,597,465 40,100
2024-09-30 $9,287,922 61,800
2024-09-30 $5,936,455 39,500
2024-09-30 $78,805,012 524,353
2024-06-30 $4,721,132 32,600
2024-06-30 $83,703,497 577,983
2024-06-30 $6,227,260 43,000
2024-03-31 $85,899,576 562,170
2024-03-31 $2,185,040 14,300
2024-03-31 $8,373,440 54,800
2023-12-31 $81,243,700 580,478
2023-12-31 $2,673,236 19,100
2023-12-31 $1,903,456 13,600
2023-09-30 $96,077,434 770,654
2023-09-30 $1,907,451 15,300
2023-09-30 $4,762,394 38,200
2023-06-30 $3,572,153 29,900
2023-06-30 $99,560,204 833,349
2023-06-30 $6,081,023 50,900
2023-03-31 $3,131,460 27,000
2023-03-31 $142,235,088 1,226,376
2023-03-31 $2,110,836 18,200
2022-12-31 $4,583,538 44,700
2022-12-31 $36,410,005 355,081
2022-12-31 $4,060,584 39,600
2022-09-30 $2,657,223 30,585
2022-09-30 $10,408,224 119,800
2022-09-30 $2,615,088 30,100
2022-06-30 $3,803,176 38,800
2022-06-30 $5,057,832 51,600
2022-06-30 $13,393,354 136,639
2022-03-31 $25,538,370 206,956
2022-03-31 $3,603,280 29,200

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