Westfield Capital Management
AVTR icon

Westfield Capital Management’s Avantor AVTR Stock Holding History

Westfield Capital Management’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
2025
Q3 		– Sell
-15,348
Closed -$207K – 240
2025
Q2 		$207K Buy
+15,348
New +$210K ﹤0.01% 239
2024
Q4 		– Sell
-2,439,577
Closed -$63.1M – 243
2024
Q3 		$63.1M Sell
2,439,577
-302,501
-11% -$7.43M 0.29% 115
2024
Q2 		$58.1M Sell
2,742,078
-2,502,137
-48% -$60.2M 0.29% 116
2024
Q1 		$134M Sell
5,244,215
-174,707
-3% -$4.16M 0.7% 29
2023
Q4 		$124M Buy
5,418,922
+1,171,976
+28% +$24M 0.72% 27
2023
Q3 		$89.5M Sell
4,246,946
-482,853
-10% -$10.3M 0.61% 48
2023
Q2 		$97.2M Buy
4,729,799
+155,357
+3% +$3.14M 0.62% 45
2023
Q1 		$96.7M Buy
4,574,442
+256,989
+6% +$5.86M 0.68% 44
2022
Q4 		$91.1M Buy
4,317,453
+330,381
+8% +$6.84M 0.7% 44
2022
Q3 		$78.1M Buy
3,987,072
+307,600
+8% +$8.24M 0.62% 53
2022
Q2 		$114M Buy
3,679,472
+636,636
+21% +$19.9M 0.9% 23
2022
Q1 		$103M Buy
3,042,836
+255,052
+9% +$9.1M 0.66% 45
2021
Q4 		$117M Buy
2,787,784
+713,043
+34% +$28.1M 0.7% 44
2021
Q3 		$84.9M Buy
+2,074,741
New +$81.1M 0.51% 69

Other funds holding AVTR

Dodge & Cox
Dodge & Cox San Francisco, California $191B AUM 17.5% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
ECM
Engine Capital Management New York $1.03B AUM 4.33% 1-Year Est. Return
GA
Greenhaven Associates Purchase, New York $8.66B AUM 17.37% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
CCP
Clarkston Capital Partners Rochester, Michigan $1.18B AUM 0.37% 1-Year Est. Return

Westfield Capital Management's AVTR Position: Q3 2025 in Review

Westfield Capital Management sold out of Avantor (AVTR) in Q3 2025, closing a stake of 15,348 shares — an estimated $207K sold.

Westfield Capital Management first reported a position in AVTR in Q3 2021 and held it in 14 quarters. The position peaked at $134M in Q1 2024. 466 funds tracked by Wall St. Rank hold AVTR as of Q3 2025.

  • Westfield Capital Management reported no remaining Avantor position as of Q3 2025 after selling out during the quarter.
  • Westfield Capital Management sold 15,348 Avantor shares in Q3 2025, an estimated $207K.
  • Westfield Capital Management first reported a position in Avantor in Q3 2021 and held it in 14 quarters.
  • Westfield Capital Management's Avantor position peaked at $134M in Q1 2024.
  • 466 funds tracked by Wall St. Rank held Avantor as of Q3 2025.

Based on Westfield Capital Management's 13F filing for Q3 2025, filed 12 Nov 2025.