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Capital World Investors

Position in WLK — Westlake Corp

CIK 1422849 LOS ANGELES, CA

Position in WLK

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$491,929,720
+$331,382,024 QoQ
Shares Held
4,211,006
+93.9% QoQ
Ownership
3.29%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2020
14 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

Capital World Investors holds $5,431,205,902 across 10 Specialty Chemicals names. WLK ranks #5 (9.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
5 WLK
Westlake Corp
This page
4,211,006 $491,929,720

All Filings in WLK

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14 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $491,929,720 4,211,006
2025-12-31 $160,547,696 2,171,324
2025-03-31 $129,051,503 1,290,128
2024-12-31 $147,611,989 1,287,501
2024-09-30 $193,274,593 1,286,011
2024-06-30 $193,276,192 1,334,596
2024-03-31 $203,923,671 1,334,579
2023-12-31 $183,604,566 1,311,836
2023-09-30 $79,303,958 636,111
2021-06-30 $235,148,773 2,610,154
2021-03-31 $231,771,822 2,610,337
2020-12-31 $450,484,224 5,520,640
2020-09-30 $307,456,182 4,863,274
2020-06-30 $164,717,732 3,070,228