Westlake Corp
WLK- Exchange
- NYSE
- Industry
- Industrial Organic Chemicals
- SEC CIK
- 0001262823
In the last 90 days, Westlake Corp insiders filed 0 open-market purchases and 1 sale; 360 institutions reported holding it in 13F filings for Q2 2026, worth $2.90B in total; no superinvestor holds it.
Q3 2025 vs. Q2 2025
How the institutions holding Westlake Corp changed between Q2 2025 and Q3 2025.
All holders in Q3 2025All holders in Q2 2025
| Measure | Q2 2025 | Of which not filed for Q3 2025 | Q3 2025 | Change |
|---|---|---|---|---|
| Holders | 306 | 5 | 305 | +4 |
| Shares | 39.4M | 1.40M | 41.6M | +3.59M (+9.4%) |
| Value | $2.99B | $106.6M | $3.20B | +$316.4M (+11.0%) |
5 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (58)
Institutions that held Westlake Corp at the end of Q3 2025 but not at the end of Q2 2025.
Sold out (54)
Institutions that held Westlake Corp at the end of Q2 2025 and filed for Q3 2025 without it.
Not filed for Q3 2025 yet (5)
Institutions that held Westlake Corp at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q2 2025 | Value, Q2 2025 |
|---|---|---|
| Norges Bank | 1,373,816 | $104.3M |
| Northeast Financial Consultants Inc | 24,800 | $1.88M |
| Total Wealth Planning & Management, Inc. | 5,586 | $424.1K |
| First Horizon Advisors, Inc. | 105 | $7.97K |
| Parkworth Wealth Management, Inc. | 4 | $304 |