PEAK6’s Atmus Filtration Technologies ATMU Stock Holding History

PEAK6’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	–	Sell	-171,500	Closed	-$8.9M	–	2697
2025 Q4	$8.9M	Buy	171,500 +3,700	+2%	+$179K	0.02%	694
2025 Q3	$7.57M	Buy	+167,800	New	+$7.04M	0.01%	834

Other funds holding ATMU

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

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 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 $3.38T AUM 44.17% 1-Year Est. Return

PEAK6's ATMU Position: Q4 2025 in Review

PEAK6 sold out of Atmus Filtration Technologies (ATMU) in Q4 2025, closing a stake of 43,558 shares — an estimated $2.11M sold.

PEAK6 first reported a position in ATMU in Q4 2024 and held it in 4 quarters. The position peaked at $3.09M in Q4 2024. 311 funds tracked by Wall St. Rank hold ATMU as of Q4 2025.

PEAK6 reported no remaining Atmus Filtration Technologies position as of Q4 2025 after selling out during the quarter.
PEAK6 sold 43,558 Atmus Filtration Technologies shares in Q4 2025, an estimated $2.11M.
PEAK6 first reported a position in Atmus Filtration Technologies in Q4 2024 and held it in 4 quarters.
PEAK6's Atmus Filtration Technologies position peaked at $3.09M in Q4 2024.
311 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q4 2025.

Based on PEAK6's 13F filing for Q4 2025, filed 13 Feb 2026.