Quarter-end position / Version 1 · published

WESTLAKE CORPORATION.

Reporting manager / owner
BRANDES INVESTMENT PARTNERS, LP
Relationship
Associated institution
Record date
2026-06-30
Date meaning
Original Form 13F report period
CUSIP / security class
960413102 / COM
Quantity
1,572,939 shares
Reported value / amount
$114,825,469
Weight / denominator
0.804954% · Calculated: issuer/class value divided by the complete original reported table; not personal wealth
Quarter-end reported price
Not disclosed; not purchase cost
Derived value per reported unit
73.000586; reported value ÷ quantity, not observed market price
Source-reported activity
Not disclosed
Coverage
Complete original information table grouped by CUSIP and security class
Reviewed by
DeepSeek AI
Published
20 Oct 2026

Original regulatory disclosure; 4 original filing line(s) grouped within this issuer/class. Absence from a disclosed table is not private account verification.

Reporting-entity association

Original filing attribution · 4 line(s)

Reporting manager: BRANDES INVESTMENT PARTNERS, LP. 13F HOLDINGS REPORT. These are reported investment-discretion relationships, not proof of beneficial ownership or a personal account. Each original line is counted once, including lines naming multiple managers.

Other included managers: 1 / Brandes Investment Partners (Asia) Pte. Ltd.; 2 / Brandes Investment Partners & Co.; 3 / Brandes Investment Partners (Europe) Ltd..

ORIGINAL LINEREPORTED QUANTITY / VALUEOTHER MANAGER / DISCRETIONVOTING AUTHORITY
41430,469 shares$2,224,237Brandes Investment Partners (Asia) Pte. Ltd.Original field: 1 · Discretion: DFNDSole 30,469Shared 0 · None 0
415149,128 shares$10,886,344Brandes Investment Partners & Co.Original field: 2 · Discretion: DFNDSole 149,128Shared 0 · None 0
416425,710 shares$31,076,830Brandes Investment Partners (Europe) Ltd.Original field: 3 · Discretion: DFNDSole 425,710Shared 0 · None 0
417967,632 shares$70,638,058No included manager referencedOriginal field: Not stated · Discretion: SOLESole 798,819Shared 0 · None 168,813

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Sources.

BRANDES INVESTMENT PARTNERS, LP — 13F-HR — 2026-06-30 · U.S. SEC EDGAR · Published 14 Aug 2026 · Collected 20 Oct 2026 · Evidence details ↗

Version history.

Version 1 · published · 20 Oct 2026 · Full review note

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