Ken Griffin’s Atmus Filtration Technologies ATMU Stock Holding History

Ken Griffin’s Portfolio ATMU Stock Details ATMU Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$965K	Buy	17,000 +4,900	+40%	+$290K	﹤0.01%	7737
2025 Q4	$628K	Sell	12,100 -6,200	-34%	-$300K	﹤0.01%	8468
2025 Q3	$825K	Buy	18,300 +100	+0.5%	+$4.2K	﹤0.01%	7962
2025 Q2	$663K	Sell	18,200 -29,700	-62%	-$1.06M	﹤0.01%	7968
2025 Q1	$1.76M	Sell	47,900 -1,200	-2%	-$47.4K	﹤0.01%	5777
2024 Q4	$1.92M	Buy	49,100 +20,900	+74%	+$848K	﹤0.01%	5714
2024 Q3	$1.06M	Sell	28,200 -88,500	-76%	-$2.89M	﹤0.01%	6763
2024 Q2	$3.36M	Sell	116,700 -411,800	-78%	-$12.5M	﹤0.01%	4380
2024 Q1	$17M	Buy	528,500 +375,300	+245%	+$8.98M	﹤0.01%	2253
2023 Q4	$3.6M	Buy	153,200 +141,900	+1,256%	+$3.04M	﹤0.01%	4332
2023 Q3	$236K	Buy	+11,300	New	+$259K	﹤0.01%	9610

Other funds holding ATMU

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

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

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

Ken Griffin's ATMU Position: Q1 2026 in Review

Ken Griffin increased its Atmus Filtration Technologies (ATMU) stake by 17% in Q1 2026, buying an estimated $1.96M and bringing the position to 230,465 shares worth $13.1M. The position accounts for ﹤0.01% of the portfolio, ranked #2870.

Ken Griffin first reported a position in ATMU in Q2 2023 and has held it in 12 quarters since. The position peaked at $44.2M in Q1 2025. 351 funds tracked by Wall St. Rank hold ATMU as of Q1 2026.

Ken Griffin held 230,465 shares of Atmus Filtration Technologies worth $13.1M as of Q1 2026.
Ken Griffin bought 33,204 Atmus Filtration Technologies shares in Q1 2026, an estimated $1.96M.
Atmus Filtration Technologies made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #2870 holding.
Ken Griffin first reported a position in Atmus Filtration Technologies in Q2 2023 and has held it in 12 quarters since.
Ken Griffin's Atmus Filtration Technologies position peaked at $44.2M in Q1 2025.
351 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.