Harbor Capital Advisors’s Atmus Filtration Technologies ATMU Stock Holding History

Harbor Capital Advisors’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	-208	Closed	-$11K	–	1239
2025 Q4	$11K	Sell	208 -7,840	-97%	-$379K	﹤0.01%	909
2025 Q3	$363K	Sell	8,048 -31,682	-80%	-$1.33M	0.03%	547
2025 Q2	$1.45M	Buy	39,730 +199	+0.5%	+$7.1K	0.06%	380
2025 Q1	$1.45M	Buy	39,531 +8,425	+27%	+$333K	0.07%	352
2024 Q4	$1.22M	Sell	31,106 -213	-0.7%	-$8.64K	0.05%	415
2024 Q3	$1.18M	Buy	31,319 +3,311	+12%	+$108K	0.05%	426
2024 Q2	$806K	Buy	28,008 +14,210	+103%	+$431K	0.06%	407
2024 Q1	$445K	Buy	+13,798	New	+$330K	0.06%	427

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

Harbor Capital Advisors's ATMU Position: Q1 2026 in Review

Harbor Capital Advisors sold out of Atmus Filtration Technologies (ATMU) in Q1 2026, closing a stake of 208 shares — an estimated $11K sold.

Harbor Capital Advisors first reported a position in ATMU in Q1 2024 and held it in 8 quarters. The position peaked at $1.45M in Q1 2025. 351 funds tracked by Wall St. Rank hold ATMU as of Q1 2026.

Harbor Capital Advisors reported no remaining Atmus Filtration Technologies position as of Q1 2026 after selling out during the quarter.
Harbor Capital Advisors sold 208 Atmus Filtration Technologies shares in Q1 2026, an estimated $11K.
Harbor Capital Advisors first reported a position in Atmus Filtration Technologies in Q1 2024 and held it in 8 quarters.
Harbor Capital Advisors's Atmus Filtration Technologies position peaked at $1.45M in Q1 2025.
351 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q1 2026.

Based on Harbor Capital Advisors's 13F filing for Q1 2026, filed 28 Apr 2026.