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AVTR in the 13F filings

Avantor Inc · CUSIP 05352A100

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
32
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 7 listed it in both
Shares listed
202,503,452
combined, among listed positions
Reported value
$1.6bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 19 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -936,145.

Managers listing AVTR in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

32 of 32 holders

ActionFiling
Dodge & Cox119,648,329$938m0.52%Added+2,583,18614 May 2026 (the filing on sec.gov)
Wellington Management Group LLP24,224,156$190munder 0.1%Added+787,52015 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.13,110,674$103m0.06%Added+6,894,75115 May 2026 (the filing on sec.gov)
Invesco Ltd8,073,854$63munder 0.1%Trimmed-9,104,86212 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)7,610,318$60munder 0.1%Trimmed-60,41415 May 2026 (the filing on sec.gov)
Jane Street Group LLC4,966,462$39munder 0.1%Added+1,134,64512 May 2026 (the filing on sec.gov)
AQR Capital Management LLC4,867,208$38munder 0.1%Added+475,61115 May 2026 (the filing on sec.gov)
Southeastern Asset Management Inc3,520,212$28m1.36%Trimmed-28,30615 May 2026 (the filing on sec.gov)
Marshall Wace LLP3,437,833$27munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP2,791,157$22m0.15%Added+207,15115 May 2026 (the filing on sec.gov)
Millennium Management LLC2,435,280$19munder 0.1%Trimmed-1,233,71715 May 2026 (the filing on sec.gov)
Tudor Investment Corp2,344,437$18munder 0.1%Added+2,021,04315 May 2026 (the filing on sec.gov)
AllianceBernstein LP847,621$9.7munder 0.1%Trimmed-9,89215 May 2026 (the filing on sec.gov)
Woodline Partners LP755,694$5.9munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc634,950$5.0munder 0.1%Added+71,47315 May 2026 (the filing on sec.gov)
Man Group PLC611,110$4.8munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC569,511$4.5munder 0.1%Trimmed-674,44515 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP418,432$3.3munder 0.1%Added+406,19015 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP356,009$2.8munder 0.1%Added+258,99514 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd307,978$2.4munder 0.1%Held018 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP225,318$1.8munder 0.1%Added+89,75015 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC194,243$1.5munder 0.1%Trimmed-15,55515 May 2026 (the filing on sec.gov)
Bridgewater Associates LP128,209$1.0munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Moore Capital Management LP115,153$903kunder 0.1%Trimmed-383,93315 May 2026 (the filing on sec.gov)
Maverick Capital Ltd100,814$790kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (7)

Exited (2)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
9 in Q3 2024 to 5 in Q2 2026

Tracked managers listing it, at least.

01020302020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
AVTR by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201910$2.1bnn.a.n.a.
Q3 20199$1.4bnn.a.n.a.
Q4 201911$2.0bnn.a.n.a.
Q1 202011$1.3bnn.a.n.a.
Q2 202012$1.9bnn.a.n.a.
Q3 202022$2.7bnn.a.n.a.
Q4 202021$4.2bnn.a.n.a.
Q1 202115$4.2bnn.a.n.a.
Q2 202112$5.2bnn.a.n.a.
Q3 202117$6.3bnn.a.n.a.
Q4 202116$6.6bnn.a.n.a.
Q1 202222$5.5bnn.a.n.a.
Q2 202220$5.4bnn.a.n.a.
Q3 202223$2.2bnn.a.n.a.
Q4 202220$2.0bnn.a.n.a.
Q1 202316$1.5bnn.a.n.a.
Q2 202314$1.4bnn.a.n.a.
Q3 202318$1.9bnn.a.n.a.
Q4 202314$3.0bn99
Q1 202416$3.1bn96
Q2 202413$2.1bn88
Q3 20249$2.6bn65
Q4 202411$2.8bn64
Q1 202510$2.2bn92
Q2 202510$2.0bn74
Q3 202510$1.8bn74
Q4 20257$1.8bn1716
Q1 20269$1.3bn1914
Q2 20265$1.5bn1616

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

AVTR and LLY →AVTR and JNJ →AVTR and VRTX →Choose a stock to compare with AVTR →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own AVTR, latest filings →Back to the 13F Explorer →