Jim Simons’s Atmus Filtration Technologies ATMU Stock Holding History

Jim Simons’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	$1.06M	Sell	18,700 -28,700	-61%	-$1.7M	﹤0.01%	2240
2025 Q4	$2.46M	Sell	47,400 -166,700	-78%	-$8.07M	﹤0.01%	1739
2025 Q3	$9.65M	Sell	214,100 -224,800	-51%	-$9.43M	0.01%	1114
2025 Q2	$16M	Buy	438,900 +23,800	+6%	+$849K	0.02%	811
2025 Q1	$15.2M	Sell	415,100 -133,300	-24%	-$5.26M	0.02%	790
2024 Q4	$21.5M	Buy	548,400 +5,500	+1%	+$223K	0.03%	642
2024 Q3	$20.4M	Sell	542,900 -73,600	-12%	-$2.4M	0.03%	653
2024 Q2	$17.7M	Buy	+616,500	New	+$18.7M	0.03%	648
2024 Q1	–	Sell	-100,900	Closed	-$2.37M	–	3695
2023 Q4	$2.37M	Sell	100,900 -106,700	-51%	-$2.29M	﹤0.01%	1850
2023 Q3	$4.33M	Buy	+207,600	New	+$4.75M	0.01%	1394

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

Jim Simons's ATMU Position: Q1 2026 in Review

Jim Simons reduced its Atmus Filtration Technologies (ATMU) stake by 61% in Q1 2026, selling an estimated $1.7M and leaving 18,700 shares worth $1.06M. The position accounts for ﹤0.01% of the portfolio, ranked #2240.

Jim Simons first reported a position in ATMU in Q3 2023 and has held it in 10 quarters since. The position peaked at $21.5M in Q4 2024. 351 funds tracked by Wall St. Rank hold ATMU as of Q1 2026.

Jim Simons held 18,700 shares of Atmus Filtration Technologies worth $1.06M as of Q1 2026.
Jim Simons sold 28,700 Atmus Filtration Technologies shares in Q1 2026, an estimated $1.7M.
Atmus Filtration Technologies made up ﹤0.01% of Jim Simons's portfolio in Q1 2026, its #2240 holding.
Jim Simons first reported a position in Atmus Filtration Technologies in Q3 2023 and has held it in 10 quarters since.
Jim Simons's Atmus Filtration Technologies position peaked at $21.5M in Q4 2024.
351 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.