Wellington Management Group’s Atmus Filtration Technologies ATMU Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$78.7M Sell
1,386,421
-216,074
-13% -$12.8M 0.01% 602
2025
Q4
$83.2M Sell
1,602,495
-616,375
-28% -$29.8M 0.01% 594
2025
Q3
$100M Sell
2,218,870
-414,355
-16% -$17.4M 0.02% 553
2025
Q2
$95.9M Buy
2,633,225
+207,568
+9% +$7.41M 0.02% 529
2025
Q1
$89.1M Buy
2,425,657
+478,018
+25% +$18.9M 0.02% 535
2024
Q4
$76.3M Sell
1,947,639
-569,699
-23% -$23.1M 0.01% 596
2024
Q3
$94.5M Buy
2,517,338
+43,004
+2% +$1.4M 0.02% 551
2024
Q2
$71.2M Sell
2,474,334
-342,556
-12% -$10.4M 0.01% 618
2024
Q1
$90.8M Buy
2,816,890
+1,988,845
+240% +$47.6M 0.02% 582
2023
Q4
$19.5M Buy
828,045
+60,714
+8% +$1.3M ﹤0.01% 946
2023
Q3
$16M Buy
767,331
+77,917
+11% +$1.78M ﹤0.01% 986
2023
Q2
$15.1M Buy
+689,414
New +$14.4M ﹤0.01% 1007

Other funds holding ATMU

Wellington Management Group's ATMU Position: Q1 2026 in Review

Wellington Management Group reduced its Atmus Filtration Technologies (ATMU) stake by 13% in Q1 2026, selling an estimated $12.8M and leaving 1,386,421 shares worth $78.7M. The position accounts for 0.01% of the portfolio, ranked #602.

Wellington Management Group first reported a position in ATMU in Q2 2023 and has held it in 12 quarters since. The position peaked at $100M in Q3 2025. 351 funds tracked by Wall St. Rank hold ATMU as of Q1 2026.

  • Wellington Management Group held 1,386,421 shares of Atmus Filtration Technologies worth $78.7M as of Q1 2026.
  • Wellington Management Group sold 216,074 Atmus Filtration Technologies shares in Q1 2026, an estimated $12.8M.
  • Atmus Filtration Technologies made up 0.01% of Wellington Management Group's portfolio in Q1 2026, its #602 holding.
  • Wellington Management Group first reported a position in Atmus Filtration Technologies in Q2 2023 and has held it in 12 quarters since.
  • Wellington Management Group's Atmus Filtration Technologies position peaked at $100M in Q3 2025.
  • 351 funds tracked by Wall St. Rank held Atmus Filtration Technologies as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.