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Avantor
AVTR

465 hedge funds and large institutions have $8.47B invested in Avantor in 2025 Q3 according to their latest regulatory filings, with 75 funds opening new positions, 144 increasing their positions, 202 reducing their positions, and 111 closing their positions.

New
Increased
Maintained
Reduced
Closed

0% more funds holding in top 10

Funds holding in top 10: 13 → 13 (0)

3% less call options, than puts

Call options by funds: $16.8M | Put options by funds: $17.3M

4.86% less ownership

Funds ownership: 104.42% → 99.57% (-4.9%)

8% less funds holding

Funds holding: 504 → 465 (-39)

12% less capital invested

Capital invested by funds: $9.58B → $8.47B (-$1.11B)

29% less repeat investments, than reductions

Existing positions increased: 144 | Existing positions reduced: 202

32% less first-time investments, than exits

New positions opened: 75 | Existing positions closed: 111

Holders
465
Holders Change
-39
Holders Change %
-7.74%
% of All Funds
6.1%
Holding in Top 10
13
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.17%
New
75
Increased
144
Reduced
202
Closed
111
Calls
$16.8M
Puts
$17.3M
Net Calls
-$521K
Net Calls Change
-$16.4M

Top Buyers

1
GA
Greenhaven Associates
New York
+$236M
2
ECM
Engine Capital Management
New York
+$183M
3
LCOV
London Company of Virginia
Virginia
+$165M
4
Citadel Advisors
Citadel Advisors
Florida
+$66.8M
5
SAM
Southeastern Asset Management
Tennessee
+$66.3M

Top Sellers

1
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
-$304M
2
BlackRock
BlackRock
New York
-$144M
3
Janus Henderson Group
Janus Henderson Group
United Kingdom
-$121M
4
Bessemer Group
Bessemer Group
New Jersey
-$90.2M
5
1832 Asset Management
1832 Asset Management
Ontario, Canada
-$60.7M
Name Holding Trade Value Shares
Change 		Change in
Stake
VOYA Investment Management
26
VOYA Investment Management
Georgia
$62M -$245K -18,997 -0.4%
Charles Schwab
27
Charles Schwab
California
$59M +$16.6M +1,289,560 +38%
SEI Investments
28
SEI Investments
Pennsylvania
$57M +$2.03M +157,309 +4%
VC
29
Voss Capital
Texas
$56.5M +$52.5M +4,075,000 +906%
Bank of New York Mellon
30
Bank of New York Mellon
New York
$54M -$9.2M -713,836 -14%
UBS Group
31
UBS Group
Switzerland
$51.9M -$25M -1,939,992 -32%
FPA
32
First Pacific Advisors
California
$50.8M +$51.5M +3,995,978 +5,328%
Corient Private Wealth
33
Corient Private Wealth
Florida
$43.8M +$44.6M +3,465,221 +8,507%
Royal Bank of Canada
34
Royal Bank of Canada
Ontario, Canada
$39.7M +$19.6M +1,518,890 +92%
SAM
35
Silvercrest Asset Management
New York
$38.4M +$4.93M +382,719 +14%
Citigroup
36
Citigroup
New York
$38.3M -$5.15M -400,042 -12%
Thrivent Financial for Lutherans
37
Thrivent Financial for Lutherans
Minnesota
$35.3M +$2.28M +176,999 +7%
Millennium Management
38
Millennium Management
New York
$33.7M +$34.7M +2,689,632 +20,885%
First Trust Advisors
39
First Trust Advisors
Illinois
$33.6M +$10M +776,412 +40%
FCM
40
Frontier Capital Management
Massachusetts
$31.8M +$24.4M +1,890,976 +290%
Point72 Asset Management
41
Point72 Asset Management
Connecticut
$31.1M +$11.1M +858,428 +52%
TD Asset Management
42
TD Asset Management
Ontario, Canada
$30.7M -$11.7M -904,361 -27%
UBS AM
43
UBS AM
Illinois
$29.7M -$52.6M -4,078,464 -63%
Natixis Advisors
44
Natixis Advisors
Massachusetts
$23.8M +$13.6M +1,058,617 +125%
Goldman Sachs
45
Goldman Sachs
New York
$23M -$5.81M -451,267 -20%
KAM
46
Kinney Asset Management
Illinois
$23M +$6.06M +470,000 +34%
NSCM
47
New South Capital Management
Tennessee
$22.8M +$262K +20,310 +1%
Raymond James Financial
48
Raymond James Financial
Florida
$22.7M +$657K +50,976 +3%
JP Morgan Chase
49
JP Morgan Chase
New York
$22.5M +$1.18M +91,254 +5%
PL
50
Perpetual Ltd
Australia
$22.5M -$22.8K -1,767 -0.1%
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AVTR Hedge Fund Activity: Q3 2025 in Review

465 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Avantor (AVTR) for Q3 2025, worth a combined $8.47B — down 12% from $9.58B a quarter earlier.

Sellers outnumbered buyers: 111 funds closed out of AVTR and 75 opened new positions — a net loss of 36 holders — while 202 trimmed existing stakes and 144 added.

The largest buyer was Greenhaven Associates, opening a new position worth an estimated $236M. The largest seller was T. Rowe Price Investment Management, cutting an estimated $304M.

  • 465 institutional investors held Avantor (AVTR) as of Q3 2025, down from 504 in Q2 2025.
  • Funds reported $8.47B of Avantor stock for Q3 2025, down 12% quarter-over-quarter.
  • 75 funds opened new Avantor positions in Q3 2025 and 111 closed out, a net change of -36 holders.
  • The largest Avantor buyer in Q3 2025 was Greenhaven Associates, an estimated $236M added.
  • The largest Avantor seller in Q3 2025 was T. Rowe Price Investment Management, an estimated $304M sold.

Based on aggregated 13F filings for Q3 2025.