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Rock Creek Group’s Avantor AVTR Stock Holding History

Rock Creek Group’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
Q1 		$784K Buy
100,000
+75,000
+300% +$738K 0.08% 43
2025
Q4 		$908K Sell
25,000
-75,000
-75% -$923K 0.1% 37
2025
Q3 		$1.25M Buy
+100,000
New +$1.29M 0.13% 35
2022
Q1 		– Sell
-20,899
Closed -$780K – 180
2021
Q4 		$780K Buy
+20,899
New +$824K 0.12% 69

Other funds holding AVTR

Dodge & Cox
Dodge & Cox San Francisco, California $182B AUM 14.68% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
GA
Greenhaven Associates Purchase, New York $6.07B AUM 11.2% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
ECM
Engine Capital Management New York $828M AUM 6.49% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Rock Creek Group's AVTR Position: Q1 2026 in Review

Rock Creek Group increased its Avantor (AVTR) stake by 300% in Q1 2026, buying an estimated $738K and bringing the position to 100,000 shares worth $784K. The position accounts for 0.08% of the portfolio, ranked #43.

Rock Creek Group first reported a position in AVTR in Q4 2021 and has held it in 4 quarters since. The position peaked at $1.25M in Q3 2025. 429 funds tracked by Wall St. Rank hold AVTR as of Q1 2026.

  • Rock Creek Group held 100,000 shares of Avantor worth $784K as of Q1 2026.
  • Rock Creek Group bought 75,000 Avantor shares in Q1 2026, an estimated $738K.
  • Avantor made up 0.08% of Rock Creek Group's portfolio in Q1 2026, its #43 holding.
  • Rock Creek Group first reported a position in Avantor in Q4 2021 and has held it in 4 quarters since.
  • Rock Creek Group's Avantor position peaked at $1.25M in Q3 2025.
  • 429 funds tracked by Wall St. Rank held Avantor as of Q1 2026.

Based on Rock Creek Group's 13F filing for Q1 2026, filed 11 May 2026.