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CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in WLK — Westlake Corp

CIK 884546 SAN FRANCISCO, CA

Position in WLK

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$23,274,079
-$13,145,957 QoQ
Shares Held
318,823
+2.3% QoQ
Ownership
0.249%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#27
of 358 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in WLK Over Time

Shares Held

Position Value (USD)

Position in Specialty Chemicals

Basic Materials · as of Jun 30, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $6,095,445,411 across 47 Specialty Chemicals names. WLK ranks #31 (0.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in WLK

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $23,274,079 318,823
2026-03-31 $36,420,036 311,762
2025-12-31 $21,978,517 297,248
2025-09-30 $21,034,451 272,962
2025-06-30 $19,502,240 256,845
2025-03-31 $24,457,034 244,497
2024-12-31 $27,097,986 236,354
2024-09-30 $33,719,364 224,362
2024-06-30 $34,481,352 238,098
2024-03-31 $35,585,744 232,891
2023-12-31 $49,395,243 352,924
2023-09-30 $42,965,271 344,632
2023-06-30 $42,179,480 353,055
2023-03-31 $39,989,904 344,800
2022-12-31 $34,652,572 337,942
2022-09-30 $29,071,872 334,621
2022-06-30 $30,996,178 316,223
2022-03-31 $37,626,140 304,912
2021-12-31 $28,918,903 297,734
2021-09-30 $26,356,685 289,189
2021-06-30 $25,725,469 285,553
2021-03-31 $25,587,857 288,184
2020-12-31 $23,931,158 293,274
2020-09-30 $18,146,668 287,040
2020-06-30 $16,358,636 304,914
2020-03-31 $12,305,626 322,390