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Callan Family Office’s Avantor AVTR Stock Holding History

Callan Family Office’s Portfolio AVTR Stock Details AVTR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$2.02M Sell
204,134
-4,094
-2% -$35.2K 0.04% 386
2026
Q1 		$1.63M Buy
208,228
+124,153
+148% +$1.22M 0.04% 411
2025
Q4 		$964K Sell
84,075
-143,190
-63% -$1.76M 0.02% 558
2025
Q3 		$2.84M Buy
227,265
+5,970
+3% +$76.9K 0.09% 224
2025
Q2 		$2.98M Buy
221,295
+155,675
+237% +$2.13M 0.09% 225
2025
Q1 		$1.06M Buy
65,620
+9,952
+18% +$189K 0.08% 208
2024
Q4 		$1.17M Buy
+55,668
New +$1.25M 0.07% 221

Other funds holding AVTR

Dodge & Cox
Dodge & Cox San Francisco, California $191B AUM 17.5% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
GA
Greenhaven Associates Purchase, New York $8.66B AUM 17.37% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
ECM
Engine Capital Management New York $1.03B AUM 4.33% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
NMC
New Mountain Capital New York $139M AUM 26.45% 1-Year Est. Return

Callan Family Office's AVTR Position: Q2 2026 in Review

Callan Family Office reduced its Avantor (AVTR) stake by 2% in Q2 2026, selling an estimated $35.2K and leaving 204,134 shares worth $2.02M. The position accounts for 0.04% of the portfolio, ranked #386.

Callan Family Office first reported a position in AVTR in Q4 2024 and has held it in 7 quarters since. The position peaked at $2.98M in Q2 2025. 460 funds tracked by Wall St. Rank hold AVTR as of Q2 2026.

  • Callan Family Office held 204,134 shares of Avantor worth $2.02M as of Q2 2026.
  • Callan Family Office sold 4,094 Avantor shares in Q2 2026, an estimated $35.2K.
  • Avantor made up 0.04% of Callan Family Office's portfolio in Q2 2026, its #386 holding.
  • Callan Family Office first reported a position in Avantor in Q4 2024 and has held it in 7 quarters since.
  • Callan Family Office's Avantor position peaked at $2.98M in Q2 2025.
  • 460 funds tracked by Wall St. Rank held Avantor as of Q2 2026.

Based on Callan Family Office's 13F filing for Q2 2026, filed 11 Aug 2026.