Westlake Corp (NYSE:WLK) is held by 292 institutional investors per 13F filings through December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| Orbis Allan Gray Ltd | 31 Mar, 2026 | 5,293,519 | 906,884 | 20.67% | $618,388,890.00 |
| Orbis Allan Gray Ltd | 31 Mar, 2026 | 4,386,635 | 472,224 | 12.06% | $324,347,792.00 |
| WELLINGTON MANAGEMENT GROUP LLP | 31 Mar, 2026 | 4,220,717 | 4,163,207 | 7,239.10% | $312,079,814.00 |
| Capital World Investors | 31 Mar, 2026 | 4,211,006 | 2,039,682 | 93.94% | $491,929,721.00 |
| VANGUARD GROUP INC | 31 Mar, 2026 | 3,917,329 | 477,698 | 13.89% | $289,647,306.00 |
| BlackRock, Inc. | 31 Mar, 2026 | 3,261,433 | 75,697 | 2.38% | $241,150,363.00 |
| BlackRock, Inc. | 31 Mar, 2026 | 3,079,087 | -182,346 | -5.59% | $359,698,953.00 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 31 Mar, 2026 | 2,407,457 | 2,407,457 | 0.00% | $281,240.00 |
| Capital World Investors | 31 Mar, 2026 | 2,171,324 | 2,171,324 | 0.00% | $160,547,697.00 |
| DIMENSIONAL FUND ADVISORS LP | 31 Mar, 2026 | 1,885,678 | 585,438 | 45.03% | $139,431,144.00 |
| BRANDES INVESTMENT PARTNERS, LP | 31 Mar, 2026 | 1,842,650 | 172,323 | 10.32% | $215,259,803.00 |
| WELLINGTON MANAGEMENT GROUP LLP | 31 Mar, 2026 | 1,793,517 | -2,427,200 | -57.51% | $209,518,656.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Mar, 2026 | 1,769,808 | 1,769,808 | 0.00% | $206,748,971.00 |
| BRANDES INVESTMENT PARTNERS, LP | 31 Mar, 2026 | 1,670,327 | 121,633 | 7.85% | $123,504,691.00 |
| Goldman Sachs Group Inc | 31 Mar, 2026 | 1,507,906 | 456,509 | 43.42% | $111,494,560.00 |
| DIMENSIONAL FUND ADVISORS LP | 31 Mar, 2026 | 1,466,020 | -419,658 | -22.26% | $171,262,546.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 1,455,594 | 1,455,594 | 0.00% | $170,042,491.00 |
| State Street Corp | 31 Mar, 2026 | 1,396,633 | 101,391 | 7.83% | $103,267,044.00 |
| Goldman Sachs Group Inc | 31 Mar, 2026 | 1,393,327 | -114,579 | -7.60% | $162,768,410.00 |
| State Street Corp | 31 Mar, 2026 | 1,380,493 | -16,140 | -1.16% | $161,269,192.00 |