WLK Westlake Corporation
Westlake Corporation (WLK) Institutional Ownership
What the institutions did with WLK last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 3.3M | 8.3% |
| Capital World Investors | 2.8M | 7.1% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 2.2M | 5.5% |
| Orbis Allan Gray Ltd | 2.1M | 5.2% |
| DIMENSIONAL FUND ADVISORS LP | 2.1M | 5.2% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.8M | 4.4% |
| BRANDES INVESTMENT PARTNERS, LP | 1.6M | 4.0% |
| AQR CAPITAL MANAGEMENT LLC | 1.6M | 3.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | 3.7% |
| STATE STREET CORP | 1.5M | 3.7% |
| GOLDMAN SACHS GROUP INC | 1.3M | 3.2% |
| CITADEL ADVISORS LLC | 1.1M | 2.7% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.0M | 2.6% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 817.2K | 2.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 718.6K | 1.8% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 709.4K | 1.8% |
| Balyasny Asset Management L.P. | 625.9K | 1.6% |
| Woodline Partners LP | 452.0K | 1.1% |
| Nuveen, LLC | 446.5K | 1.1% |
| MORGAN STANLEY | 437.6K | 1.1% |
| UBS Group AG | 431.6K | 1.1% |
| SCHRODER INVESTMENT MANAGEMENT GROUP | 375.9K | 0.9% |
| MILLENNIUM MANAGEMENT LLC | 366.1K | 0.9% |
| FMR LLC | 361.2K | 0.9% |
| ExodusPoint Capital Management, LP | 327.2K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Orbis Allan Gray Ltd | Reduced | 5.3M | 2.1M | -3.2M |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 1.8M | 141.8K | -1.7M |
| Capital World Investors | Reduced | 4.2M | 2.8M | -1.4M |
| AQR CAPITAL MANAGEMENT LLC | Increased | 260.1K | 1.6M | +1.3M |
| FMR LLC | Reduced | 1.3M | 361.2K | -951.2K |
| Holocene Advisors, LP | Sold Out | 730.0K | 0 | -730.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.5M | 2.1M | +585.5K |
| UBS Group AG | Reduced | 811.3K | 431.6K | -379.6K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Increased | 349.0K | 709.4K | +360.3K |
| CITADEL ADVISORS LLC | Increased | 715.6K | 1.1M | +339.3K |
| ExodusPoint Capital Management, LP | New | 0 | 327.2K | +327.2K |
| Qube Research & Technologies Ltd | New | 0 | 321.7K | +321.7K |
| MILLENNIUM MANAGEMENT LLC | Increased | 85.0K | 366.1K | +281.1K |
| BRANDES INVESTMENT PARTNERS, LP | Reduced | 1.8M | 1.6M | -269.7K |
| NEW YORK STATE COMMON RETIREMENT FUND | Reduced | 309.6K | 40.9K | -268.7K |
| FEDERATED HERMES, INC. | Reduced | 266.7K | 2.6K | -264.1K |
| Balyasny Asset Management L.P. | Increased | 369.7K | 625.9K | +256.2K |
| BlackRock, Inc. | Increased | 3.1M | 3.3M | +215.1K |
| Susquehanna Portfolio Strategies, LLC | Increased | 18.4K | 230.4K | +212.0K |
| Jump Financial, LLC | New | 0 | 209.9K | +209.9K |
| DEPRINCE RACE & ZOLLO INC | Sold Out | 203.4K | 0 | -203.4K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 2.4M | 2.2M | -200.8K |
| Ceredex Value Advisors LLC | Sold Out | 177.9K | 0 | -177.9K |
| Merewether Investment Management, LP | Reduced | 219.9K | 53.4K | -166.5K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | 981.4K | 817.2K | -164.2K |
| Campbell & CO Investment Adviser LLC | New | 0 | 148.2K | +148.2K |
| Lighthouse Investment Partners, LLC | New | 0 | 135.4K | +135.4K |
| Man Group plc | Reduced | 160.3K | 25.7K | -134.6K |
| CAPSTONE INVESTMENT ADVISORS, LLC | Reduced | 135.8K | 4.7K | -131.1K |
| Allspring Global Investments Holdings, LLC | Reduced | 285.4K | 163.1K | -122.4K |
| Nuveen, LLC | Reduced | 564.7K | 446.5K | -118.3K |
| HRT FINANCIAL LP | New | 0 | 116.4K | +116.4K |
| Woodline Partners LP | Increased | 337.1K | 452.0K | +114.9K |
| GOLDMAN SACHS GROUP INC | Reduced | 1.4M | 1.3M | -112.5K |
| MARSHALL WACE, LLP | New | 0 | 111.6K | +111.6K |
| TUDOR INVESTMENT CORP ET AL | New | 0 | 110.7K | +110.7K |
| Assenagon Asset Management S.A. | New | 0 | 110.6K | +110.6K |
| Yaupon Capital Management LP | Sold Out | 107.0K | 0 | -107.0K |
| Russell Investments Group, Ltd. | Increased | 89.4K | 194.4K | +105.0K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 614.3K | 718.6K | +104.3K |
| Cerity Partners LLC | Increased | 72.7K | 166.4K | +93.8K |
| ROBOTTI ROBERT | Increased | 145.0K | 235.4K | +90.4K |
| Erste Asset Management GmbH | Reduced | 395.0K | 305.0K | -90.0K |
| Point72 Asset Management, L.P. | New | 0 | 89.7K | +89.7K |
| Alberta Investment Management Corp | New | 0 | 89.2K | +89.2K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 6.7K | 94.4K | +87.7K |
| JANE STREET GROUP, LLC | Reduced | 105.7K | 21.8K | -83.9K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | Increased | 944.0K | 1.0M | +79.4K |
| NATIXIS | New | 0 | 77.1K | +77.1K |
| FIRST TRUST ADVISORS LP | Reduced | 102.3K | 27.5K | -74.8K |
| STATE STREET CORP | Increased | 1.4M | 1.5M | +72.9K |
| ProShare Advisors LLC | Reduced | 295.8K | 228.3K | -67.5K |
| JPMORGAN CHASE & CO | Increased | 97.7K | 163.3K | +65.5K |
| Lloyd Harbor Capital Management, LLC | Sold Out | 62.0K | 0 | -62.0K |
| Rokos Capital Management LLP | Sold Out | 60.8K | 0 | -60.8K |
| Turas Capital Management LP | New | 0 | 58.8K | +58.8K |
| CAPITAL INTERNATIONAL SARL | Reduced | 63.6K | 9.9K | -53.8K |
| AXQ CAPITAL, LP | New | 0 | 51.4K | +51.4K |
| MORGAN STANLEY | Reduced | 486.5K | 437.6K | -48.9K |
| Albar Capital Partners LLP | Sold Out | 48.8K | 0 | -48.8K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.