Belfer Management’s Avantor AVTR Stock Holding History

Belfer 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 Q2	$221K	Hold	22,317	–	–	3.66%	16
2026 Q1	$175K	Sell	22,317 -1,304	-6%	-$12.8K	2.93%	15
2025 Q4	$271K	Sell	23,621 -1,840	-7%	-$22.6K	4.74%	11
2025 Q3	$318K	Hold	25,461	–	–	4.41%	9
2025 Q2	$343K	Sell	25,461 -3,166	-11%	-$43.3K	5.24%	10
2025 Q1	$464K	Buy	28,627 +3,591	+14%	+$68K	8.06%	3
2024 Q4	$648K	Hold	25,036	–	–	10.31%	2
2024 Q3	$648K	Hold	25,036	–	–	10.49%	2
2024 Q2	$531K	Hold	25,036	–	–	10.01%	2
2024 Q1	$640K	Buy	25,036 +129	+0.5%	+$3.07K	11.54%	2
2023 Q4	$569K	Hold	24,907	–	–	12.01%	2
2023 Q3	$525K	Hold	24,907	–	–	13.6%	2
2023 Q2	$512K	Hold	24,907	–	–	13.58%	2
2023 Q1	$527K	Buy	24,907 +2,179	+10%	+$49.7K	13.64%	2
2022 Q4	$479K	Hold	22,728	–	–	16.4%	2
2022 Q3	$445K	Buy	+22,728	New	+$609K	16.35%	2

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

Belfer Management's AVTR Position: Q2 2026 in Review

Belfer Management held its Avantor (AVTR) position steady in Q2 2026 at 22,317 shares worth $221K. The position accounts for 3.66% of the portfolio, ranked #16.

Belfer Management first reported a position in AVTR in Q3 2022 and has held it in 16 quarters since. The position peaked at $648K in Q4 2024. 456 funds tracked by Wall St. Rank hold AVTR as of Q2 2026.

Belfer Management held 22,317 shares of Avantor worth $221K as of Q2 2026.
Belfer Management left its Avantor share count unchanged in Q2 2026.
Avantor made up 3.66% of Belfer Management's portfolio in Q2 2026, its #16 holding.
Belfer Management first reported a position in Avantor in Q3 2022 and has held it in 16 quarters since.
Belfer Management's Avantor position peaked at $648K in Q4 2024.
456 funds tracked by Wall St. Rank held Avantor as of Q2 2026.

Based on Belfer Management's 13F filing for Q2 2026, filed 7 Aug 2026.