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D. E. Shaw & Co., Inc.

Position in WLK — Westlake Corp

CIK 1009207 New York, NY

Position in WLK

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$14,638,982
-$12,601,455 QoQ
Shares Held
200,534
-14.0% QoQ
Ownership
0.157%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#39
of 358 holders
Holding Since
Jun 2020
23 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 Mar 31, 2026
CallValue
$0
CallShares
0
PutValue
$771,012
PutShares
6,600

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, 2026

D. E. Shaw & Co., Inc. holds $1,683,552,826 across 37 Specialty Chemicals names. WLK ranks #12 (0.9% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in WLK

Export CSV
29 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $14,638,982 200,534
2026-03-31 $27,240,437 233,183
2026-03-31 $771,012 6,600
2025-12-31 $488,004 6,600
2025-12-31 $35,955,616 486,281
2025-09-30 $12,330,293 160,009
2025-06-30 $235,383 3,100
2025-06-30 $26,040,952 342,960
2025-03-31 $22,842,549 228,357
2024-12-31 $28,977,443 252,747
2024-09-30 $9,371,783 62,358
2024-03-31 $468,637 3,067
2023-12-31 $542,764 3,878
2023-09-30 $4,021,230 32,255
2023-03-31 $2,654,434 22,887
2022-12-31 $3,968,298 38,700
2022-12-31 $6,256,580 61,016
2022-09-30 $4,648,080 53,500
2022-09-30 $3,362,256 38,700
2022-09-30 $4,568,324 52,582
2022-06-30 $5,244,070 53,500
2022-03-31 $4,356,020 35,300
2021-12-31 $1,143,121 11,769
2021-09-30 $6,209,458 68,131
2021-06-30 $9,370,530 104,013
2021-03-31 $9,656,444 108,756
2020-12-31 $4,754,096 58,261
2020-09-30 $2,408,239 38,093
2020-06-30 $271,737 5,065