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Livermore
Livermore
ZHEN

Avantor, Inc.

AVTR
Exchange
NYSE
Industry
Laboratory Analytical Instruments
SEC CIK
0001722482

No open-market purchases or sales by Avantor, Inc. insiders were filed in the last 90 days; 460 institutions reported holding it in 13F filings for Q2 2026, worth $6.92B in total; superinvestors Greenhaven Associates and Southeastern Asset Management (Longleaf) hold it.

Superinvestors holding AVTR, Q2 2026

2 superinvestors report holding Avantor, Inc. on Form 13F, worth $290.7M in total. Weight is Avantor, Inc.'s share of each 13F portfolio; actions compare shares with Q1 2026.

See all superinvestors
Superinvestors holding AVTR in Q2 2026
Superinvestor% of portfolioSharesValuevs. previous quarter
Greenhaven AssociatesEdgar Wachenheim III2.8%24,637,310$243.9MAdded+9.0%
Southeastern Asset Management (Longleaf)Mason Hawkins2.4%4,725,478$46.8MAdded+34.2%

Moves by quarter

Superinvestors that opened, added to, trimmed or sold out of AVTR each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.

  1. Q2 2026

    2 superinvestors holding at quarter end

    Added
    Greenhaven Associates (+9.0%), Southeastern Asset Management (Longleaf) (+34.2%)
    Sold out
    Maverick Capital

  2. Q1 2026

    3 superinvestors holding at quarter end

    New
    Maverick Capital
    Added
    Greenhaven Associates (+10.2%)
    Reduced
    Southeastern Asset Management (Longleaf) (−0.8%)

  3. Q4 2025

    2 superinvestors holding at quarter end

    Added
    Greenhaven Associates (+12.0%)
    Reduced
    Southeastern Asset Management (Longleaf) (−31.1%)

  4. Q3 2025

    2 superinvestors holding at quarter end

    New
    Greenhaven Associates, Southeastern Asset Management (Longleaf)

  5. Q3 2024

    0 superinvestors holding at quarter end

    Sold out
    Soros Fund Management

  6. Q2 2024

    1 superinvestor holding at quarter end

    Reduced
    Soros Fund Management (−40.0%)

  7. Q1 2024

    1 superinvestor holding at quarter end

    Reduced
    Soros Fund Management (−37.5%)

  8. Q4 2023

    1 superinvestor holding at quarter end

    New
    Soros Fund Management

  9. Q1 2023

    0 superinvestors holding at quarter end

    Sold out
    Maverick Capital, Duquesne Family Office

  10. Q4 2022

    2 superinvestors holding at quarter end

    Reduced
    Maverick Capital (−9.2%)
    Sold out
    Viking Global Investors

  11. Q3 2022

    3 superinvestors holding at quarter end

    New
    Maverick Capital, Duquesne Family Office
    Reduced
    Viking Global Investors (−53.0%)

  12. Q2 2022

    1 superinvestor holding at quarter end

    Added
    Viking Global Investors (+78.3%)
    Sold out
    Third Point

  13. Q1 2022

    2 superinvestors holding at quarter end

    Reduced
    Third Point (−22.6%), Viking Global Investors (−60.6%)

  14. Q4 2021

    2 superinvestors holding at quarter end

    Added
    Viking Global Investors (+23.4%)

  15. Q3 2021

    2 superinvestors holding at quarter end

    Added
    Third Point (+2.9%)
    Reduced
    Viking Global Investors (−39.3%)
    Sold out
    Maverick Capital

  16. Q2 2021

    3 superinvestors holding at quarter end

    Added
    Maverick Capital (+244.8%)
    Reduced
    Viking Global Investors (−24.3%), Third Point (−4.5%)