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MILLENNIUM MANAGEMENT LLC

Position in WLK — Westlake Corp

CIK 1273087 NEW YORK, NY

Position in WLK

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$9,929,349
-$21,698,781 QoQ
Shares Held
84,997
-80.1% QoQ
Ownership
0.066%
of shares outstanding
% of Portfolio
0.01%
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)

Position in Specialty Chemicals

Basic Materials · as of Mar 31, 2026

MILLENNIUM MANAGEMENT LLC holds $1,139,651,387 across 46 Specialty Chemicals names. WLK ranks #21 (0.9% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in WLK

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $9,929,349 84,997
2025-12-31 $31,628,130 427,754
2025-09-30 $8,193,019 106,320
2025-06-30 $59,973,006 789,846
2025-03-31 $90,149,936 901,229
2024-12-31 $22,137,424 193,087
2024-09-30 $13,038,859 86,758
2024-06-30 $19,060,629 131,616
2024-03-31 $14,712,348 96,285
2023-12-31 $3,481,505 24,875
2023-09-30 $24,966,912 200,264
2023-06-30 $3,080,056 25,781
2023-03-31 $409,177 3,528
2022-12-31 $866,770 8,453
2022-09-30 $11,258,431 129,586
2022-06-30 $2,123,211 21,661
2022-03-31 $14,317,608 116,026
2021-12-31 $13,675,224 140,793
2021-09-30 $117,701,477 1,291,436
2021-06-30 $61,164,533 678,927
2021-03-31 $125,210,059 1,410,182
2020-12-31 $843,580 10,338
2020-09-30 $3,720,370 58,848
2020-06-30 $31,807,958 592,879
2020-03-31 $25,110,707 657,865