ATMUS FILTRATION TECHNOLOGIE (ATMU) Stock Institutional Trading Activity
ATMUS FILTRATION TECHNOLOGIE (ATMU) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC and Tweedy, Browne Co All Funds (US). Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.
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- ATMUS FILTRATION TECHNOLOGIE (ATMU) stock institutional ownership
- ATMUS FILTRATION TECHNOLOGIE (ATMU) stock insider trading activity
- Stock rankings
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2025 | Renaissance Technologies LLC | Sell | -166,700 | 47,400 | $2,460,534 |
| Q4 2025 | Tweedy, Browne Co All Funds (US) | Sell | -48,607 | 40,550 | $2,104,950 |
| Q3 2025 | Renaissance Technologies LLC | Sell | -224,800 | 214,100 | $9,653,769 |
| Q3 2025 | Tweedy, Browne Co All Funds (US) | Sell | -429 | 89,157 | $4,020,089 |
| Q2 2025 | Renaissance Technologies LLC | Buy | 23,800 | 438,900 | $15,984,738 |
| Q1 2025 | Renaissance Technologies LLC | Sell | -133,300 | 415,100 | $15,246,623 |
| Q1 2025 | Tweedy, Browne Co All Funds (US) | Sell | -42,146 | 89,586 | $3,290,494 |
| Q4 2024 | Renaissance Technologies LLC | Buy | 5,500 | 548,400 | $21,486,312 |
| Q3 2024 | Renaissance Technologies LLC | Sell | -73,600 | 542,900 | $20,375,037 |
| Q3 2024 | Tweedy, Browne Co All Funds (US) | Sell | -463 | 131,732 | $4,943,902 |
| Q2 2024 | Renaissance Technologies LLC | Buy | 515,600 | 616,500 | $17,742,870 |
| Q4 2023 | Renaissance Technologies LLC | Sell | -106,700 | 100,900 | $2,370 |
| Q3 2023 | Renaissance Technologies LLC | Buy | 207,600 | 207,600 | $4,328 |
| Q3 2023 | Tweedy, Browne Co All Funds (US) | Buy | 132,195 | 132,195 | $2,756,266 |
Frequently asked questions about ATMU activity
Which institutional owners are buying ATMU?
Institutional owners buying ATMU include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in ATMU activity?
"Buy" means an investor increased their reported position in ATMU compared to the prior reporting period. This reflects growing exposure to ATMUS FILTRATION TECHNOLOGIE (ATMU) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in ATMU increasing?
Institutional interest in ATMU can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.