Healthcare of Ontario Pension Plan (HOOPP) Trust Fund’s Atmus Filtration Technologies ATMU Stock Holding History

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund’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	$25.8M	Buy	454,638 +401,315	+753%	+$23.7M	0.04%	305
2025 Q4	$2.77M	Buy	+53,323	New	+$2.58M	﹤0.01%	820
2025 Q3	–	Sell	-67,800	Closed	-$2.47M	–	1184
2025 Q2	$2.47M	Hold	67,800	–	–	﹤0.01%	625
2025 Q1	$2.49M	Hold	67,800	–	–	0.01%	598
2024 Q4	$2.66M	Sell	67,800 -522,300	-89%	-$21.2M	0.01%	632
2024 Q3	$22.1M	Buy	590,100 +93,900	+19%	+$3.06M	0.05%	254
2024 Q2	$14.3M	Buy	+496,200	New	+$15M	0.04%	239

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

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund's ATMU Position: Q1 2026 in Review

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund increased its Atmus Filtration Technologies (ATMU) stake by 753% in Q1 2026, buying an estimated $23.7M and bringing the position to 454,638 shares worth $25.8M. The position accounts for 0.04% of the portfolio, ranked #305.

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund first reported a position in ATMU in Q2 2024 and has held it in 7 quarters since. 351 funds tracked by Wall St. Rank hold ATMU as of Q1 2026.

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund held 454,638 shares of Atmus Filtration Technologies worth $25.8M as of Q1 2026.
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund bought 401,315 Atmus Filtration Technologies shares in Q1 2026, an estimated $23.7M.
Atmus Filtration Technologies made up 0.04% of Healthcare of Ontario Pension Plan (HOOPP) Trust Fund's portfolio in Q1 2026, its #305 holding.
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund first reported a position in Atmus Filtration Technologies in Q2 2024 and has held it in 7 quarters since.
351 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q1 2026.

Based on Healthcare of Ontario Pension Plan (HOOPP) Trust Fund's 13F filing for Q1 2026, filed 14 May 2026.