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Round Rock Advisors’s Atmus Filtration Technologies ATMU Stock Holding History

Round Rock 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
Q2 		$346K Sell
6,789
-5,689
-46% -$309K 0.04% 262
2026
Q1 		$708K Sell
12,478
-1,004
-7% -$59.3K 0.11% 146
2025
Q4 		$700K Buy
13,482
+24
+0.2% +$1.16K 0.11% 151
2025
Q3 		$607K Buy
+13,458
New +$565K 0.1% 146

Other funds holding ATMU

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return

Round Rock Advisors's ATMU Position: Q2 2026 in Review

Round Rock Advisors reduced its Atmus Filtration Technologies (ATMU) stake by 46% in Q2 2026, selling an estimated $309K and leaving 6,789 shares worth $346K. The position accounts for 0.04% of the portfolio, ranked #262.

Round Rock Advisors first reported a position in ATMU in Q3 2025 and has held it in 4 quarters since. The position peaked at $708K in Q1 2026. 336 funds tracked by Wall St. Rank hold ATMU as of Q2 2026.

  • Round Rock Advisors held 6,789 shares of Atmus Filtration Technologies worth $346K as of Q2 2026.
  • Round Rock Advisors sold 5,689 Atmus Filtration Technologies shares in Q2 2026, an estimated $309K.
  • Atmus Filtration Technologies made up 0.04% of Round Rock Advisors's portfolio in Q2 2026, its #262 holding.
  • Round Rock Advisors first reported a position in Atmus Filtration Technologies in Q3 2025 and has held it in 4 quarters since.
  • Round Rock Advisors's Atmus Filtration Technologies position peaked at $708K in Q1 2026.
  • 336 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q2 2026.

Based on Round Rock Advisors's 13F filing for Q2 2026, filed 12 Aug 2026.