Twin Tree Management’s Avantor AVTR Stock Holding History

Twin Tree 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
2026 Q1	–	Sell	-67,600	Closed	-$775K	–	1280
2025 Q4	$775K	Buy	+67,600	New	+$832K	0.01%	1056
2025 Q1	–	Sell	-33,000	Closed	-$695K	–	1548
2024 Q4	$695K	Hold	33,000	–	–	﹤0.01%	1314
2024 Q3	$854K	Sell	33,000 -62,500	-65%	-$1.53M	﹤0.01%	1246
2024 Q2	$2.02M	Sell	95,500 -90,500	-49%	-$2.18M	﹤0.01%	962
2024 Q1	$4.76M	Buy	+186,000	New	+$4.42M	0.01%	828
2022 Q2	–	Sell	-12,000	Closed	-$406K	–	1482
2022 Q1	$406K	Buy	+12,000	New	+$428K	﹤0.01%	1404
2021 Q3	–	Sell	-55,500	Closed	-$1.97M	–	1548
2021 Q2	$1.97M	Sell	55,500 -70,300	-56%	-$2.27M	0.01%	885
2021 Q1	$3.64M	Sell	125,800 -407,500	-76%	-$11.8M	0.01%	718
2020 Q4	$15M	Sell	533,300 -97,500	-15%	-$2.51M	0.06%	356
2020 Q3	$14.2M	Buy	+630,800	New	+$13.1M	0.06%	357

Other funds holding AVTR

Dodge & Cox San Francisco, California $191B AUM 17.5% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Greenhaven Associates Purchase, New York $8.66B AUM 17.37% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

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 Dallas, Texas $33B AUM 40.62% 1-Year Est. Return

NMC

New Mountain Capital New York $139M AUM 26.45% 1-Year Est. Return

Twin Tree Management's AVTR Position: Q2 2026 in Review

Twin Tree Management opened a new position in Avantor (AVTR) in Q2 2026: 121 shares worth $1.2K. The stake represents ﹤0.01% of the portfolio and ranks #1351 among its holdings. This is a return to the name: Twin Tree Management previously reported a position in AVTR as recently as Q4 2025.

Twin Tree Management first reported a position in AVTR in Q2 2020 and has held it in 13 quarters since. The position peaked at $14.7M in Q4 2023. 460 funds tracked by Wall St. Rank hold AVTR as of Q2 2026.

Twin Tree Management held 121 shares of Avantor worth $1.2K as of Q2 2026.
Avantor was a new Twin Tree Management position in Q2 2026.
Avantor made up ﹤0.01% of Twin Tree Management's portfolio in Q2 2026, its #1351 holding.
Twin Tree Management first reported a position in Avantor in Q2 2020 and has held it in 13 quarters since.
Twin Tree Management's Avantor position peaked at $14.7M in Q4 2023.
460 funds tracked by Wall St. Rank held Avantor as of Q2 2026.

Based on Twin Tree Management's 13F filing for Q2 2026, filed 12 Aug 2026.