California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Atmus Filtration Technologies ATMU Stock Holding History

California State Teachers Retirement System (CalSTRS)’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 		$4.83M Sell
94,700
-2,766
-3% -$150K ﹤0.01% 1107
2026
Q1 		$5.53M Buy
97,466
+18,890
+24% +$1.12M 0.01% 956
2025
Q4 		$4.08M Buy
78,576
+1,099
+1% +$53.2K ﹤0.01% 1035
2025
Q3 		$3.49M Sell
77,477
-5,800
-7% -$243K ﹤0.01% 1107
2025
Q2 		$3.03M Buy
83,277
+236
+0.3% +$8.42K ﹤0.01% 1136
2025
Q1 		$3.05M Buy
83,041
+5,065
+6% +$200K ﹤0.01% 1110
2024
Q4 		$3.06M Sell
77,976
-908
-1% -$36.8K ﹤0.01% 1155
2024
Q3 		$2.96M Sell
78,884
-2,461
-3% -$80.3K ﹤0.01% 1179
2024
Q2 		$2.34M Buy
81,345
+56,753
+231% +$1.72M ﹤0.01% 1284
2024
Q1 		$793K Buy
24,592
+6,831
+38% +$163K ﹤0.01% 1923
2023
Q4 		$417K Sell
17,761
-709
-4% -$15.2K ﹤0.01% 2298
2023
Q3 		$385K Buy
+18,470
New +$423K ﹤0.01% 2330

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 $3.38T AUM 44.17% 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

California State Teachers Retirement System (CalSTRS)'s ATMU Position: Q2 2026 in Review

California State Teachers Retirement System (CalSTRS) reduced its Atmus Filtration Technologies (ATMU) stake by 2.8% in Q2 2026, selling an estimated $150K and leaving 94,700 shares worth $4.83M. The position accounts for ﹤0.01% of the portfolio, ranked #1107.

California State Teachers Retirement System (CalSTRS) first reported a position in ATMU in Q3 2023 and has held it in 12 quarters since. The position peaked at $5.53M in Q1 2026. 335 funds tracked by Wall St. Rank hold ATMU as of Q2 2026.

  • California State Teachers Retirement System (CalSTRS) held 94,700 shares of Atmus Filtration Technologies worth $4.83M as of Q2 2026.
  • California State Teachers Retirement System (CalSTRS) sold 2,766 Atmus Filtration Technologies shares in Q2 2026, an estimated $150K.
  • Atmus Filtration Technologies made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q2 2026, its #1107 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Atmus Filtration Technologies in Q3 2023 and has held it in 12 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Atmus Filtration Technologies position peaked at $5.53M in Q1 2026.
  • 335 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q2 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q2 2026, filed 24 Aug 2026.