AVANTOR INC (AVTR) Stock Institutional Trading Activity


AVANTOR INC (AVTR) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Greenhaven Associates, Longleaf Partners, Olstein Capital Management, Renaissance Technologies LLC, and Dodge & Cox Stock Fund. 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
Q2 2024Dodge & Cox Stock FundBuy1,683,88465,364,190$1,385,720,828
Q2 2024Sound Shore ManagementSell-384,9823,604,345$76,412,114
Q2 2024Olstein Capital ManagementSell-3,000291,184$6,173
Q2 2024First Eagle U.S. ValueBuy2,60018,482$391,819
Q2 2024Parnassus Endeavor FundSell-253,0772,961,499$62,783,779
Q2 2024Durable Capital PartnersSell-2,461,5076,037,845$128,002,314
Q1 2024Dodge & Cox Stock FundBuy2,483,97563,680,306$1,628,305,424
Q1 2024Olstein Capital ManagementSell-20,816294,184$7,522
Q1 2024Parnassus Endeavor FundSell-3,723,4283,214,576$82,196,708
Q1 2024Durable Capital PartnersBuy8,499,3528,499,352$217,328,431
Q4 2023Dodge & Cox Stock FundBuy47,904,42761,196,331$1,397,112,237
Q4 2023Olstein Capital ManagementBuy9,000315,000$7,191
Q4 2023Causeway Capital ManagementSell-13,4272,559,572$58,435,004
Q3 2023Dodge & Cox Stock FundBuy13,291,90413,291,904$280,193,336
Q3 2023Sound Shore ManagementBuy639,7153,989,327$84,095,013
Q3 2023Meritage GroupSell-2,367,9508,897,724$187,564
Q3 2023First Eagle U.S. ValueBuy97715,882$334,792
Q3 2023Causeway Capital ManagementSell-11,4552,572,999$54,238,851
Q3 2023Parnassus Endeavor FundSell-1,955,4136,938,004$146,253,124
Q2 2023Sound Shore ManagementSell-540,7913,349,612$68,801,031
Q2 2023Olstein Capital ManagementBuy165,000306,000$6,285
Q2 2023Meritage GroupBuy6,123,25011,265,674$231,397
Q2 2023First Eagle U.S. ValueSell-30014,905$306,149
Q2 2023Causeway Capital ManagementBuy1,138,3312,584,454$53,084,672
Q1 2023Sound Shore ManagementBuy3,890,4033,890,403$82,243,120
Q1 2023Olstein Capital ManagementBuy141,000141,000$2,981
Q1 2023Meritage GroupBuy5,142,4245,142,424$108,711
Q1 2023First Eagle U.S. ValueBuy14,09915,205$321,434
Q1 2023Causeway Capital ManagementBuy83,8581,446,123$30,571,018
Q1 2023Parnassus Endeavor FundBuy141,0268,893,417$188,006,835

Frequently asked questions about AVTR activity

  • Which institutional owners are buying AVTR?

    Institutional owners buying AVTR 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 AVTR activity?

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

  • Is institutional interest in AVTR increasing?

    Institutional interest in AVTR 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.