Avantor
AVTR
433 hedge funds and large institutions have $5.31B invested in Avantor in 2026 Q1 according to their latest regulatory filings, with 91 funds opening new positions, 169 increasing their positions, 126 reducing their positions, and 73 closing their positions.
34% more repeat investments, than reductions
Existing positions increased: 169 | Existing positions reduced: 126
25% more first-time investments, than exits
New positions opened: 91 | Existing positions closed: 73
3% more funds holding
Funds holding: 421 → 433 (+12)
2.73% less ownership
Funds ownership: 101.8% → 99.07% (-2.7%)
14% less funds holding in top 10
Funds holding in top 10: 7 → 6 (-1)
33% less capital invested
Capital invested by funds: $7.97B → $5.31B (-$2.66B)
93% less call options, than puts
Call options by funds: $4.76M | Put options by funds: $72.8M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fuller & Thaler Asset Management
San Mateo,
California
|
+$88.6M |
| 2 |
ECM
Engine Capital Management
New York
|
+$77.3M |
| 3 |
D.E. Shaw & Co
New York
|
+$67.8M |
| 4 |
BlackRock
New York
|
+$60.1M |
| 5 |
YAM
Yacktman Asset Management
Austin,
Texas
|
+$46.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
-$171M |
| 2 |
Morgan Stanley
New York
|
-$112M |
| 3 |
Barrow, Hanley, Mewhinney & Strauss
Dallas,
Texas
|
-$108M |
| 4 |
Invesco
Atlanta,
Georgia
|
-$89.6M |
| 5 |
Manulife (Manufacturers Life Insurance)
Canada,
Ontario, Canada
|
-$75.1M |
AVTR Hedge Fund Activity: Q1 2026 in Review
433 of the 8,187 institutional investors tracked by Wall St. Rank reported a position in Avantor (AVTR) for Q1 2026, worth a combined $5.31B — down 33% from $7.97B a quarter earlier.
Buyers outnumbered sellers: 91 funds opened new AVTR positions and 73 closed out — a net gain of 18 holders — while 169 added to existing stakes and 126 trimmed.
The largest buyer was Fuller & Thaler Asset Management, adding an estimated $88.6M. The largest seller was T. Rowe Price Investment Management, cutting an estimated $171M.
- 433 institutional investors held Avantor (AVTR) as of Q1 2026, up from 421 in Q4 2025.
- Funds reported $5.31B of Avantor stock for Q1 2026, down 33% quarter-over-quarter.
- 91 funds opened new Avantor positions in Q1 2026 and 73 closed out, a net change of +18 holders.
- The largest Avantor buyer in Q1 2026 was Fuller & Thaler Asset Management, an estimated $88.6M added.
- The largest Avantor seller in Q1 2026 was T. Rowe Price Investment Management, an estimated $171M sold.
Based on aggregated 13F filings for Q1 2026.