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Thompson Siegel & Walmsley’s Atmus Filtration Technologies ATMU Stock Holding History

Thompson Siegel & Walmsley’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
2025
Q2 		– Sell
-84,814
Closed -$3.12M – 396
2025
Q1 		$3.12M Sell
84,814
-111,072
-57% -$4.38M 0.05% 223
2024
Q4 		$7.67M Sell
195,886
-25,078
-11% -$1.02M 0.12% 153
2024
Q3 		$8.29M Sell
220,964
-67,857
-23% -$2.21M 0.12% 152
2024
Q2 		$8.31M Buy
288,821
+276,821
+2,307% +$8.4M 0.13% 147
2024
Q1 		$387K Buy
+12,000
New +$287K 0.01% 316

Other funds holding ATMU

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
EC
Eminence Capital New York $4.36B AUM 3.1% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Thompson Siegel & Walmsley's ATMU Position: Q2 2025 in Review

Thompson Siegel & Walmsley sold out of Atmus Filtration Technologies (ATMU) in Q2 2025, closing a stake of 84,814 shares — an estimated $3.12M sold.

Thompson Siegel & Walmsley first reported a position in ATMU in Q1 2024 and held it in 5 quarters. The position peaked at $8.31M in Q2 2024. 278 funds tracked by Wall St. Rank hold ATMU as of Q2 2025.

  • Thompson Siegel & Walmsley reported no remaining Atmus Filtration Technologies position as of Q2 2025 after selling out during the quarter.
  • Thompson Siegel & Walmsley sold 84,814 Atmus Filtration Technologies shares in Q2 2025, an estimated $3.12M.
  • Thompson Siegel & Walmsley first reported a position in Atmus Filtration Technologies in Q1 2024 and held it in 5 quarters.
  • Thompson Siegel & Walmsley's Atmus Filtration Technologies position peaked at $8.31M in Q2 2024.
  • 278 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q2 2025.

Based on Thompson Siegel & Walmsley's 13F filing for Q2 2025, filed 6 Aug 2025.