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Overview
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Business Summary
Filings
Ownership
Valuation
Ownership — WLK
Institutional Holdings
Insider Transactions
US Institutional Ownership
30.4%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
3.29M
$240.0M
2.57%
+215.1K
2026-06-30
Capital World Investors
2.84M
$207.0M
2.22%
-1.37M
2026-06-30
PRICE T ROWE ASSOCIATES INC /MD/
2.21M
$161.0M
1.72%
-200.8K
2026-06-30
Orbis Allan Gray Ltd
2.08M
$152.0M
1.63%
-3.21M
2026-06-30
DIMENSIONAL FUND ADVISORS LP
2.05M
$149.0M
1.60%
+585.5K
2026-06-30
VANGUARD PORTFOLIO MANAGEMENT LLC
1.75M
$127.0M
1.37%
-17.2K
2026-06-30
BRANDES INVESTMENT PARTNERS, LP
1.57M
$114.0M
1.23%
-269.7K
2026-06-30
AQR CAPITAL MANAGEMENT LLC
1.57M
$114.0M
1.23%
+1.31M
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
1.46M
$106.0M
1.14%
+8.6K
2026-06-30
STATE STREET CORP
1.45M
$106.0M
1.14%
+72.9K
2026-06-30
GOLDMAN SACHS GROUP INC
1.28M
$93.0M
1.00%
-112.5K
2026-06-30
CITADEL ADVISORS LLC
1.15M
$84.0M
0.90%
+304.3K
2026-06-30
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
1.02M
$74.0M
0.80%
--
2026-06-30
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
817.2K
$59.0M
0.64%
-164.2K
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
718.6K
$52.0M
0.56%
+104.3K
2026-06-30
JACOBS LEVY EQUITY MANAGEMENT, INC
709.4K
$51.0M
0.55%
+360.3K
2026-06-30
Balyasny Asset Management L.P.
625.9K
$45.0M
0.49%
+256.2K
2026-06-30
Woodline Partners LP
452.0K
$32.0M
0.35%
+114.9K
2026-06-30
Nuveen, LLC
446.5K
$32.0M
0.35%
-118.3K
2026-06-30
MORGAN STANLEY
437.6K
$31.0M
0.34%
-48.9K
2026-06-30
UBS Group AG
431.6K
$31.0M
0.34%
-379.6K
2026-06-30
MILLENNIUM MANAGEMENT LLC
366.1K
$26.0M
0.29%
+281.1K
2026-06-30
FMR LLC
361.2K
$26.0M
0.28%
-951.2K
2026-06-30
ExodusPoint Capital Management, LP
327.2K
$23.0M
0.26%
+172.8K
2026-06-30
Qube Research & Technologies Ltd
321.7K
$23.0M
0.25%
+187.1K
2026-06-30
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