Westlake Corp (NYSE:WLK) appears in 292 institutional 13F filings for the quarter ending 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 |
| Capital World Investors | 31 Mar, 2026 | 4,211,006 | 2,039,682 | 93.94% | $491,929,721.00 |
| 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 |
| 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 |
| 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 |
| 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 |
| FMR LLC | 31 Mar, 2026 | 1,312,473 | 1,083,630 | 473.53% | $153,323,057.00 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 31 Mar, 2026 | 981,405 | 56,701 | 6.13% | $114,647,732.00 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 31 Mar, 2026 | 943,975 | 67,090 | 7.65% | $110,274,077.00 |
| UBS Group AG | 31 Mar, 2026 | 811,266 | 163,254 | 25.19% | $94,772,095.00 |
| Holocene Advisors, LP | 31 Mar, 2026 | 730,035 | -490,587 | -40.19% | $85,282,689.00 |
| CITADEL ADVISORS LLC | 31 Mar, 2026 | 715,586 | 512,283 | 251.98% | $83,594,756.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 614,334 | 19,412 | 3.26% | $71,782,009.00 |
| Nuveen, LLC | 31 Mar, 2026 | 564,744 | -88,165 | -13.50% | $65,973,394.00 |
| Janus Henderson Group Plc | 31 Mar, 2026 | 539,566 | 204,973 | 61.26% | $63,035,198.00 |