WESTLAKE CORP (WLK) Institutional Buying Activity

Institutional investors tracked by InsiderSet increased exposure to WESTLAKE CORP (WLK) during the quarter ended March 31, 2026 through a combination of new purchases and expanded existing positions disclosed in SEC Form 13F filings.

The largest institutional buyer of WLK during the latest reporting period was Renaissance Technologies LLC, which increased its reported WLK position by approximately $20.94M based on quarter-end filing values. Several additional hedge funds and long-term asset managers also reported meaningful increases in WLK exposure during the quarter.

Institutional buying activity can provide insight into investor conviction, sector allocation trends, and smart money positioning toward WESTLAKE CORP (WLK). InsiderSet tracks quarterly accumulation trends, new institutional positions, ownership increases, and estimated performance of newly disclosed holdings using SEC filing data and recent market prices.

The investors highlighted on this page collectively added approximately $39.13M in reported WLK exposure during the latest filing period, reflecting continued institutional interest in WESTLAKE CORP's growth initiatives and strategic positioning.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026First Eagle U.S. ValueBuy7,0657,118$831,524
Q2 2025First Eagle U.S. ValueBuy7976,885$522,778
Q1 2025First Eagle U.S. ValueBuy1006,088$608,983
Q4 2024Renaissance Technologies LLCBuy182,600350,700$40,207,755
Q3 2024Renaissance Technologies LLCBuy109,000168,100$25,263,749
Q3 2024First Eagle U.S. ValueBuy5505,988$899,936
Q2 2024First Eagle U.S. ValueBuy7505,438$787,532
Q1 2024First Eagle U.S. ValueBuy504,688$716,327
Q4 2023Renaissance Technologies LLCBuy6,70069,000$9,657
Q3 2023Renaissance Technologies LLCBuy46,70062,300$7,767
Q3 2023First Eagle U.S. ValueBuy1,7704,638$578,219
Q2 2023First Eagle U.S. ValueBuy6622,868$342,640
Q1 2023First Eagle U.S. ValueBuy2,1002,206$255,852
Q3 2022Renaissance Technologies LLCBuy30,60077,500$6,733
Q3 2022First Eagle U.S. ValueBuy84106$9
Q2 2022Renaissance Technologies LLCBuy24,20046,900$4,597
Q2 2022First Eagle U.S. ValueBuy2222$2
Q4 2021Renaissance Technologies LLCBuy70,000181,000$17,581
Q2 2021Renaissance Technologies LLCBuy104,600140,100$12,622
Q4 2018Renaissance Technologies LLCBuy131,000707,300$46,802
Q3 2018Renaissance Technologies LLCBuy298,800576,300$47,896
Q1 2018Renaissance Technologies LLCBuy233,300277,500$30,844
Q1 2016Renaissance Technologies LLCBuy189,700488,900$22,636
Q3 2015Renaissance Technologies LLCBuy226,800559,000$29,007
Q1 2015Third Avenue ManagementBuy4004,900$353
Q4 2014Renaissance Technologies LLCBuy25,200792,500$48,414
Q4 2014Third Avenue ManagementBuy4,5004,500$275
Q2 2014Renaissance Technologies LLCBuy35,338856,538$71,744
Q1 2014Renaissance Technologies LLCBuy442,500821,200$54,347
Q4 2013Renaissance Technologies LLCBuy36,000378,700$46,228

Frequently asked questions about WLK activity

  • Which institutional owners are buying WLK?

    Institutional owners buying WLK include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in WLK activity?

    "Buy" means an investor increased their reported position in WLK compared to the prior reporting period. This reflects growing exposure to WESTLAKE CORP (WLK) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in WLK increasing?

    Institutional interest in WLK can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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