Weiss Asset Management’s Atmus Filtration Technologies ATMU Stock Holding History

Weiss Asset 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 Q1	$710K	Buy	+12,506	New	+$739K	0.01%	367
2025 Q1	–	Sell	-143,208	Closed	-$5.61M	–	338
2024 Q4	$5.61M	Sell	143,208 -127,063	-47%	-$5.16M	0.11%	188
2024 Q3	$10.1M	Sell	270,271 -537,077	-67%	-$17.5M	0.22%	110
2024 Q2	$23.2M	Sell	807,348 -578,535	-42%	-$17.5M	0.88%	27
2024 Q1	$44.7M	Sell	1,385,883 -545,299	-28%	-$13M	1.54%	12
2023 Q4	$45.4M	Buy	1,931,182 +102,479	+6%	+$2.2M	2.17%	8
2023 Q3	$38.1M	Buy	1,828,703 +1,713,110	+1,482%	+$39.2M	2.26%	11
2023 Q2	$2.54M	Buy	+115,593	New	+$2.42M	0.19%	72

Other funds holding ATMU

BlackRock New York $5.72T AUM 30.48% 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 $1.61T AUM 30.72% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Weiss Asset Management's ATMU Position: Q1 2026 in Review

Weiss Asset Management opened a new position in Atmus Filtration Technologies (ATMU) in Q1 2026: 12,506 shares worth $710K. The stake represents 0.01% of the portfolio and ranks #367 among its holdings. This is a return to the name: Weiss Asset Management previously reported a position in ATMU as recently as Q4 2024.

Weiss Asset Management first reported a position in ATMU in Q2 2023 and has held it in 8 quarters since. The position peaked at $45.4M in Q4 2023. 351 funds tracked by Wall St. Rank hold ATMU as of Q1 2026.

Weiss Asset Management held 12,506 shares of Atmus Filtration Technologies worth $710K as of Q1 2026.
Atmus Filtration Technologies was a new Weiss Asset Management position in Q1 2026.
Atmus Filtration Technologies made up 0.01% of Weiss Asset Management's portfolio in Q1 2026, its #367 holding.
Weiss Asset Management first reported a position in Atmus Filtration Technologies in Q2 2023 and has held it in 8 quarters since.
Weiss Asset Management's Atmus Filtration Technologies position peaked at $45.4M in Q4 2023.
351 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q1 2026.

Based on Weiss Asset Management's 13F filing for Q1 2026, filed 15 May 2026.