CastleKnight Management’s Avantor AVTR Stock Holding History

CastleKnight 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	$7.44M	Buy	+751,700	New	+$6.47M	0.1%	144
2023 Q3	–	Sell	-12,600	Closed	-$259K	–	309
2023 Q2	$259K	Hold	12,600	–	–	0.03%	263
2023 Q1	$266K	Sell	12,600 -8,400	-40%	-$191K	0.03%	230
2022 Q4	$443K	Sell	21,000 -7,300	-26%	-$151K	0.06%	148
2022 Q3	$555K	Buy	+28,300	New	+$758K	0.08%	133

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

CastleKnight Management's AVTR Position: Q2 2026 in Review

CastleKnight Management opened a new position in Avantor (AVTR) in Q2 2026: 751,700 shares worth $7.44M. The stake represents 0.1% of the portfolio and ranks #144 among its holdings. This is a return to the name: CastleKnight Management previously reported a position in AVTR as recently as Q2 2023.

CastleKnight Management first reported a position in AVTR in Q3 2022 and has held it in 5 quarters since. 460 funds tracked by Wall St. Rank hold AVTR as of Q2 2026.

CastleKnight Management held 751,700 shares of Avantor worth $7.44M as of Q2 2026.
Avantor was a new CastleKnight Management position in Q2 2026.
Avantor made up 0.1% of CastleKnight Management's portfolio in Q2 2026, its #144 holding.
CastleKnight Management first reported a position in Avantor in Q3 2022 and has held it in 5 quarters since.
460 funds tracked by Wall St. Rank held Avantor as of Q2 2026.

Based on CastleKnight Management's 13F filing for Q2 2026, filed 14 Aug 2026.