Riverwater Partners’s Atmus Filtration Technologies ATMU Stock Holding History

Riverwater Partners’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 Q3	$1.91M	Hold	43,911	–	–	0.53%	66
2026 Q2	$2.24M	Sell	43,911 -9,234	-17%	-$502K	0.66%	50
2026 Q1	$3.02M	Buy	53,145 +2,388	+5%	+$141K	1.01%	24
2025 Q4	$2.63M	Hold	50,757	–	–	1.02%	23
2025 Q3	$2.29M	Hold	50,757	–	–	0.95%	28
2025 Q2	$1.85M	Sell	50,757 -7	-0%	-$250	0.87%	31
2025 Q1	$1.86M	Buy	50,764 +5	+0%	+$197	0.96%	28
2024 Q4	$1.99M	Buy	50,759 +59	+0.1%	+$2.39K	0.97%	24
2024 Q3	$1.88M	Buy	+50,700	New	+$1.65M	0.94%	26

Other funds holding ATMU

Channing Capital Management Chicago, Illinois $3.82B AUM 15.06% 1-Year Est. Return

Boston Trust Walden Boston, Massachusetts $12.4B AUM 21.62% 1-Year Est. Return

Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return

Prentiss Smith & Co Brattleboro, Vermont $177M AUM 17.01% 1-Year Est. Return

Moody Aldrich Partners Marblehead, Massachusetts $523M AUM 75.24% 1-Year Est. Return

Vest Financial Mclean, Virginia $9.5B AUM 22.78% 1-Year Est. Return

DekaBank Deutsche Girozentrale Frankfurt, Germany $87.8B AUM 20.94% 1-Year Est. Return

Y-Intercept (HK) Hong Kong $4.52B AUM 6.6% 1-Year Est. Return

Louisiana State Employees Retirement System Baton Rouge, Louisiana $6.56B AUM 41.43% 1-Year Est. Return

PGCM

Prescott Group Capital Management Tulsa, Oklahoma $1.11B AUM 20.16% 1-Year Est. Return

Riverwater Partners's ATMU Position: Q3 2026 in Review

Riverwater Partners held its Atmus Filtration Technologies (ATMU) position steady in Q3 2026 at 43,911 shares worth $1.91M. The position accounts for 0.53% of the portfolio, ranked #66.

Riverwater Partners first reported a position in ATMU in Q3 2024 and has held it in 9 quarters since. The position peaked at $3.02M in Q1 2026. 95 funds tracked by Wall St. Rank hold ATMU as of Q3 2026.

Riverwater Partners held 43,911 shares of Atmus Filtration Technologies worth $1.91M as of Q3 2026.
Riverwater Partners left its Atmus Filtration Technologies share count unchanged in Q3 2026.
Atmus Filtration Technologies made up 0.53% of Riverwater Partners's portfolio in Q3 2026, its #66 holding.
Riverwater Partners first reported a position in Atmus Filtration Technologies in Q3 2024 and has held it in 9 quarters since.
Riverwater Partners's Atmus Filtration Technologies position peaked at $3.02M in Q1 2026.
95 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q3 2026.

Based on Riverwater Partners's 13F filing for Q3 2026, filed 3 Nov 2026.