Rossby Financial
AVTR icon

Rossby Financial’s Avantor AVTR Stock Holding History

Rossby Financial’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
Q3 		$21K Sell
1,394
-141
-9% -$1.89K ﹤0.01% 1237
2026
Q2 		$15.2K Buy
1,535
+771
+101% +$6.64K ﹤0.01% 1045
2026
Q1 		$5.94K Buy
764
+242
+46% +$2.38K ﹤0.01% 1444
2025
Q4 		$5.98K Buy
522
+262
+101% +$3.22K ﹤0.01% 1063
2025
Q3 		$3.55K Buy
260
+138
+113% +$1.78K ﹤0.01% 1041
2025
Q2 		$1.64K Hold
122
– – ﹤0.01% 1075
2025
Q1 		$1.58K Buy
+122
New +$2.31K ﹤0.01% 959

Other funds holding AVTR

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
GA
Greenhaven Associates Purchase, New York $7.96B AUM 12.24% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
SEI Investments
SEI Investments Oaks, Pennsylvania $113B AUM 26.61% 1-Year Est. Return
Yacktman Asset Management
Yacktman Asset Management Austin, Texas $8.38B AUM 19.52% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
Clarkston Capital Partners
Clarkston Capital Partners Rochester, Michigan $1.1B AUM 2.84% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return
Royce & Associates
Royce & Associates New York $11B AUM 39.4% 1-Year Est. Return

Rossby Financial's AVTR Position: Q3 2026 in Review

Rossby Financial reduced its Avantor (AVTR) stake by 9.2% in Q3 2026, selling an estimated $1.89K and leaving 1,394 shares worth $21K. The position accounts for ﹤0.01% of the portfolio, ranked #1237.

Rossby Financial first reported a position in AVTR in Q1 2025 and has held it in 7 quarters since. 278 funds tracked by Wall St. Rank hold AVTR as of Q3 2026.

  • Rossby Financial held 1,394 shares of Avantor worth $21K as of Q3 2026.
  • Rossby Financial sold 141 Avantor shares in Q3 2026, an estimated $1.89K.
  • Avantor made up ﹤0.01% of Rossby Financial's portfolio in Q3 2026, its #1237 holding.
  • Rossby Financial first reported a position in Avantor in Q1 2025 and has held it in 7 quarters since.
  • 278 funds tracked by Wall St. Rank held Avantor as of Q3 2026.

Based on Rossby Financial's 13F filing for Q3 2026, filed 5 Nov 2026.