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Western Standard LLC’s Avantor AVTR Stock Holding History

Western Standard LLC’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 		$20.9M Buy
+2,109,984
New +$18.2M 7.07% 5
2023
Q2 		– Sell
-150,400
Closed -$3.18M – 36
2023
Q1 		$3.18M Buy
+150,400
New +$3.43M 3.23% 10

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 $3.37T AUM 44.26% 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

Western Standard LLC's AVTR Position: Q2 2026 in Review

Western Standard LLC opened a new position in Avantor (AVTR) in Q2 2026: 2,109,984 shares worth $20.9M. The stake represents 7.07% of the portfolio and ranks #5 among its holdings. This is a return to the name: Western Standard LLC previously reported a position in AVTR as recently as Q1 2023.

Western Standard LLC first reported a position in AVTR in Q1 2023 and has held it in 2 quarters since. 460 funds tracked by Wall St. Rank hold AVTR as of Q2 2026.

  • Western Standard LLC held 2,109,984 shares of Avantor worth $20.9M as of Q2 2026.
  • Avantor was a new Western Standard LLC position in Q2 2026.
  • Avantor made up 7.07% of Western Standard LLC's portfolio in Q2 2026, its #5 holding.
  • Western Standard LLC first reported a position in Avantor in Q1 2023 and has held it in 2 quarters since.
  • 460 funds tracked by Wall St. Rank held Avantor as of Q2 2026.

Based on Western Standard LLC's 13F filing for Q2 2026, filed 10 Aug 2026.