LYONDELLBASELL INDUSTRIES N (LYB) Stock Institutional Trading Activity


LYONDELLBASELL INDUSTRIES N (LYB) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include Muhlenkamp & Co, Dodge & Cox Stock Fund, Sequoia Financial Advisors, Miller Value Partners, and Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2019Renaissance Technologies LLCBuy121,600125,400$11,848
Q3 2019Torray FundBuy24426,535$2,374
Q2 2019Torray FundBuy1,61526,291$2,264
Q2 2019Renaissance Technologies LLCSell-1,577,2003,800$327
Q1 2019Torray FundBuy2,10724,676$2,075
Q1 2019Viking Global InvestorsSell-3,238,083633,235$53,242
Q1 2019Renaissance Technologies LLCBuy346,7001,581,000$132,930
Q4 2018Torray FundBuy2,32322,569$1,877
Q4 2018Renaissance Technologies LLCBuy780,4001,234,300$102,644
Q3 2018Torray FundBuy2,46020,246$2,075
Q3 2018Renaissance Technologies LLCBuy20,100453,900$46,529
Q2 2018Torray FundBuy30217,786$1,954
Q1 2018Torray FundBuy1,53517,484$1,848
Q1 2018Renaissance Technologies LLCBuy68,300433,800$45,844
Q4 2017Torray FundBuy1,62915,949$1,759
Q4 2017Renaissance Technologies LLCSell-8,500365,500$40,322
Q3 2017Torray FundBuy94014,320$1,418
Q2 2017Torray FundBuy3,35013,380$1,129
Q2 2017Renaissance Technologies LLCBuy46,800374,000$31,562
Q2 2017Viking Global InvestorsBuy1,441,0933,871,318$326,701
Q1 2017Torray FundBuy1010,030$915
Q1 2017Viking Global InvestorsBuy145,1552,430,225$221,612
Q1 2017Muhlenkamp & CoBuy3002,900$264
Q4 2016Torray FundSell-10510,020$860
Q4 2016Viking Global InvestorsSell-1,675,0082,285,070$196,013
Q4 2016Muhlenkamp & CoSell-4002,600$223
Q3 2016Torray FundBuy25010,125$817
Q3 2016Renaissance Technologies LLCBuy282,700327,200$26,392
Q3 2016First Eagle U.S. ValueSell-493,545540,825$43,623
Q3 2016Viking Global InvestorsBuy3,656,2263,960,078$319,420

Frequently asked questions about LYB activity

  • Which institutional owners are buying LYB?

    Institutional owners buying LYB 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 LYB activity?

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

  • Is institutional interest in LYB increasing?

    Institutional interest in LYB 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.