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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
ECM
126
ExodusPoint Capital Management
New York
$3.12M +$2.61M +202,337 +423%
QT
127
Quantbot Technologies
New York
$3.08M +$2.95M +229,293 +1,333%
State of New Jersey Common Pension Fund D
128
State of New Jersey Common Pension Fund D
New Jersey
$3.05M +$228K +17,706 +8%
NICM
129
Neo Ivy Capital Management
New York
$2.96M +$1.25M +97,042 +69%
Lazard Asset Management
130
Lazard Asset Management
New York
$2.9M -$283K -21,935 -9%
CFO
131
Callan Family Office
Pennsylvania
$2.84M +$76.9K +5,970 +3%
MWAM
132
Manhattan West Asset Management
California
$2.79M +$1.14M +88,241 +65%
TRSOTSOK
133
Teachers Retirement System of the State of Kentucky
Kentucky
$2.7M -$4M -310,823 -59%
Bank of Montreal
134
Bank of Montreal
Ontario, Canada
$2.59M +$72.1K +5,597 +3%
Ohio Public Employees Retirement System (OPERS)
135
Ohio Public Employees Retirement System (OPERS)
Ohio
$2.58M +$16.5K +1,279 +0.6%
ASRS
136
Arizona State Retirement System
Arizona
$2.52M +$30.9K +2,400 +1%
LPL Financial
137
LPL Financial
California
$2.5M -$888K -68,954 -26%
Handelsbanken Fonder
138
Handelsbanken Fonder
Sweden
$2.46M +$419K +32,500 +20%
YCM
139
Yousif Capital Management
Michigan
$2.44M -$179K -13,900 -7%
LSERS
140
Louisiana State Employees Retirement System
Louisiana
$2.37M -$24.5K -1,900 -1%
Robeco Institutional Asset Management
141
Robeco Institutional Asset Management
Netherlands
$2.35M +$1.1M +85,119 +82%
DIA
142
Dean Investment Associates
Ohio
$2.25M +$2.32M +180,436 New
PAS
143
Point72 Asia (Singapore)
Singapore
$2.25M +$2.32M +180,167 New
OAM
144
Oppenheimer Asset Management
New York
$2.23M +$497K +38,556 +27%
COPPSERS
145
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$2.18M -$1.46K -113 -0.1%
HS
146
HighVista Strategies
Massachusetts
$2.15M +$2.22M +172,400 New
ET
147
Entropy Technologies
New York
$2.09M +$1.15M +88,952 +113%
Squarepoint
148
Squarepoint
New York
$2.06M +$160K +12,447 +8%
Universal-Beteiligungs- und Servicegesellschaft
149
Universal-Beteiligungs- und Servicegesellschaft
Germany
$2.04M -$2.79M -216,587 -57%
SOMRS
150
State of Michigan Retirement System
Michigan
$2.03M -$19.3K -1,500 -0.9%
4 5
6
7 8

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.