Calamos Advisors’s Avantor AVTR Stock Holding History

Calamos Advisors’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	–	Sell	-38,401	Closed	-$301K	–	998
2026 Q1	$301K	Buy	+38,401	New	+$378K	﹤0.01%	1004
2022 Q3	–	Sell	-260,972	Closed	-$8.12M	–	1287
2022 Q2	$8.12M	Buy	+260,972	New	+$8.15M	0.04%	560

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

Calamos Advisors's AVTR Position: Q2 2026 in Review

Calamos Advisors sold out of Avantor (AVTR) in Q2 2026, closing a stake of 38,401 shares — an estimated $301K sold.

Calamos Advisors first reported a position in AVTR in Q2 2022 and held it in 2 quarters. The position peaked at $8.12M in Q2 2022. 460 funds tracked by Wall St. Rank hold AVTR as of Q2 2026.

Calamos Advisors reported no remaining Avantor position as of Q2 2026 after selling out during the quarter.
Calamos Advisors sold 38,401 Avantor shares in Q2 2026, an estimated $301K.
Calamos Advisors first reported a position in Avantor in Q2 2022 and held it in 2 quarters.
Calamos Advisors's Avantor position peaked at $8.12M in Q2 2022.
460 funds tracked by Wall St. Rank held Avantor as of Q2 2026.

Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.