Dark Forest Capital Management’s Atmus Filtration Technologies ATMU Stock Holding History

Dark Forest Capital Management’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 Q2	–	Sell	-116,279	Closed	-$6.6M	–	799
2026 Q1	$6.6M	Sell	116,279 -35,664	-23%	-$2.11M	0.59%	17
2025 Q4	$7.89M	Buy	151,943 +26,507	+21%	+$1.28M	0.36%	32
2025 Q3	$5.66M	Buy	125,436 +48,382	+63%	+$2.03M	0.21%	99
2025 Q2	$2.81M	Sell	77,054 -176,478	-70%	-$6.3M	0.11%	299
2025 Q1	$9.31M	Buy	253,532 +181,750	+253%	+$7.17M	0.42%	12
2024 Q4	$2.81M	Sell	71,782 -25,567	-26%	-$1.04M	0.41%	33
2024 Q3	$3.65M	Buy	97,349 +55,767	+134%	+$1.82M	0.47%	34
2024 Q2	$1.2M	Buy	41,582 +24,875	+149%	+$754K	0.22%	82
2024 Q1	$539K	Buy	+16,707	New	+$400K	0.09%	256

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 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

Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return

Dark Forest Capital Management's ATMU Position: Q2 2026 in Review

Dark Forest Capital Management sold out of Atmus Filtration Technologies (ATMU) in Q2 2026, closing a stake of 116,279 shares — an estimated $6.6M sold.

Dark Forest Capital Management first reported a position in ATMU in Q1 2024 and held it in 9 quarters. The position peaked at $9.31M in Q1 2025. 336 funds tracked by Wall St. Rank hold ATMU as of Q2 2026.

Dark Forest Capital Management reported no remaining Atmus Filtration Technologies position as of Q2 2026 after selling out during the quarter.
Dark Forest Capital Management sold 116,279 Atmus Filtration Technologies shares in Q2 2026, an estimated $6.6M.
Dark Forest Capital Management first reported a position in Atmus Filtration Technologies in Q1 2024 and held it in 9 quarters.
Dark Forest Capital Management's Atmus Filtration Technologies position peaked at $9.31M in Q1 2025.
336 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q2 2026.

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