WLKWestlake Corporation

$74.63

Who owns WLK

326 institutions reported holding WLK for 2026Q1, together 34% of the company, more than the 290 a quarter earlier.

326

Institutions reporting a position · as of 2026Q1 · up from 290 the quarter before

Shares held by institutions
44.0M

Shares held by institutions · 34% of the company · long US equity positions only, as reported on Form 13F

Reported value
$5.13B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
14%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
84
Positions exited
55
Added to
105
Reduced
78
Top 10 holdersof the company
21%
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q132644.0M$5.13B
2025Q429046.2M$3.42B
2025Q329741.3M$3.18B
2025Q229839.1M$2.97B
2025Q135236.1M$3.61B
2024Q437335.1M$4.03B
2024Q339733.6M$5.05B
2024Q237833.9M$4.91B
2024Q134134.6M$5.27B
2023Q435135.9M$5.02B
2023Q332837.1M$4.62B
2023Q233336.8M$4.39B
2023Q133538.2M$4.36B
2022Q433536.2M$3.71B
2022Q331734.8M$3.02B
2022Q234735.5M$3.48B
Largest reported holders, 2026Q1
HolderShares% of companyValue
Orbis Allan Gray Ltd5.3M4.1%$618M
Capital World Investors4.2M3.3%$492M
VANGUARD GROUP INC3.5M2.7%$409M
BlackRock Inc.3.1M2.4%$360M
PRICE T ROWE ASSOCIATES INC /MD/2.4M1.9%$281M
BRANDES INVESTMENT PARTNERS, LP1.8M1.4%$215M
WELLINGTON MANAGEMENT GROUP LLP1.8M1.4%$210M
DIMENSIONAL FUND ADVISORS LP1.5M1.1%$171M
GOLDMAN SACHS GROUP INC1.4M1.1%$163M
STATE STREET CORP1.4M1.1%$161M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

reading the register…