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WELLINGTON MANAGEMENT GROUP LLP

Position in WLK — Westlake Corp

CIK 902219 Boston, MA

Position in WLK

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$10,352,568
-$199,166,086 QoQ
Shares Held
141,816
-92.1% QoQ
Ownership
0.111%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#49
of 358 holders
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 0% Shared 91% None 9%

Common Shares in WLK Over Time

Shares Held

Position Value (USD)

Position in Specialty Chemicals

Basic Materials · as of Jun 30, 2026

WELLINGTON MANAGEMENT GROUP LLP holds $5,287,047,127 across 22 Specialty Chemicals names. WLK ranks #14 (0.2% 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
2026-06-30 $10,352,568 141,816
2026-03-31 $209,518,654 1,793,517
2025-12-31 $312,079,813 4,220,717
2025-09-30 $4,431,719 57,510
2025-03-31 $467,539 4,674
2024-12-31 $4,922,382 42,934
2024-09-30 $6,109,739 40,653
2024-06-30 $7,027,245 48,524
2024-03-31 $7,331,190 47,979
2023-12-31 $6,448,516 46,074
2023-09-30 $6,257,685 50,194
2023-06-30 $4,373,915 36,611
2023-03-31 $3,335,120 28,756
2022-12-31 $4,752,420 46,347
2022-09-30 $4,169,631 47,993
2022-06-30 $15,667,711 159,842
2022-03-31 $22,489,032 182,245
2021-12-31 $18,074,046 186,081
2021-09-30 $2,992,217 32,831
2021-06-30 $2,732,789 30,334
2021-03-31 $2,783,921 31,354
2020-12-31 $2,077,209 25,456
2020-09-30 $2,045,166 32,350
2020-06-30 $1,762,724 32,856
2020-03-31 $1,546,380 40,513