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Castleark Management’s Atmus Filtration Technologies ATMU Stock Holding History

Castleark 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
Q2 		– Sell
-119,350
Closed -$6.78M – 312
2026
Q1 		$6.78M Buy
+119,350
New +$7.05M 0.22% 115

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

Castleark Management's ATMU Position: Q2 2026 in Review

Castleark Management sold out of Atmus Filtration Technologies (ATMU) in Q2 2026, closing a stake of 119,350 shares — an estimated $6.78M sold.

Castleark Management first reported a position in ATMU in Q1 2026 and held it in 1 quarter. The position peaked at $6.78M in Q1 2026. 335 funds tracked by Wall St. Rank hold ATMU as of Q2 2026.

  • Castleark Management reported no remaining Atmus Filtration Technologies position as of Q2 2026 after selling out during the quarter.
  • Castleark Management sold 119,350 Atmus Filtration Technologies shares in Q2 2026, an estimated $6.78M.
  • Castleark Management first reported a position in Atmus Filtration Technologies in Q1 2026 and held it in 1 quarter.
  • Castleark Management's Atmus Filtration Technologies position peaked at $6.78M in Q1 2026.
  • 335 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q2 2026.

Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.