Westlake Corporation (WLK) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for WLK. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 349 institutions reported holding WLK, with 39.7 million shares worth $2.9 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Vanguard | 3,486,983 | $255M | DECREASED |
| BlackRock | 3,294,162 | $240M | INCREASED |
| Capital Group | 2,842,348 | $207M | DECREASED |
| T. Rowe Price | 2,206,676 | $161M | DECREASED |
| Orbis Allan Gray | 2,084,364 | $152M | DECREASED |
Full institutional holdings, insider history, and congressional trades for Westlake Corporation on SentiSense.