ATMUS FILTRATION TECHNOLOGIE (ATMU) Institutional Ownership Changes & 13F Activity
ATMUS FILTRATION TECHNOLOGIE (ATMU). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Eminence Capital, Lp, T. Rowe Price Investment Management, Inc., Fmr Llc, Parsifal Capital Management, Lp, and Qube Research & Technologies Ltd.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Op Asset Management Ltd | Buy | +84,992 | +227.6% | 122,340 | $6.95M | Q1 2026 | Sep 28, 2026 |
| Algert Global Llc | Sell | -55,005 | -9.7% | 514,932 | $29.23M | Q1 2026 | Aug 11, 2026 |
| Wells Fargo & Company/Mn | Sell | -63,326 | -35.4% | 115,512 | $6.56M | Q1 2026 | Jul 08, 2026 |
| Bank Of America Corp | Buy | +225,601 | +33.8% | 893,577 | $50.73M | Q1 2026 | May 18, 2026 |
| California State Teachers Retirement System | Buy | +18,890 | +24.0% | 97,466 | $5.53M | Q1 2026 | May 18, 2026 |
| Altshuler Shaham Ltd | Buy | +21 | — | 21 | $4.03K | Q1 2026 | May 18, 2026 |
| Eminence Capital, Lp | Sell | -2,543,351 | -66.5% | 1,281,995 | $72.78M | Q1 2026 | May 15, 2026 |
| T. Rowe Price Investment Management, Inc. | Buy | +1,526,174 | +2800.2% | 1,580,676 | $89.73M | Q1 2026 | May 15, 2026 |
| Fmr Llc | Buy | +517,992 | +11.7% | 4,937,777 | $280.32M | Q1 2026 | May 15, 2026 |
| Parsifal Capital Management, Lp | Sell | -445,300 | -36.1% | 788,987 | $44.79M | Q1 2026 | May 15, 2026 |
| Qube Research & Technologies Ltd | Buy | +406,965 | +121.8% | 741,198 | $42.08M | Q1 2026 | May 15, 2026 |
| Morgan Stanley | Sell | -386,409 | -18.2% | 1,736,994 | $98.61M | Q1 2026 | May 15, 2026 |
| Nomura Asset Management International Inc. | Buy | +284,198 | — | 284,198 | $16.13M | Q1 2026 | May 15, 2026 |
| Marshall Wace, Llp | Sell | -242,118 | -42.9% | 322,609 | $18.31M | Q1 2026 | May 15, 2026 |
| Geode Capital Management, Llc | Buy | +216,401 | +8.9% | 2,645,085 | $150.18M | Q1 2026 | May 15, 2026 |
| Wellington Management Group Llp | Sell | -216,074 | -13.5% | 1,386,421 | $78.71M | Q1 2026 | May 15, 2026 |
| Price T Rowe Associates Inc | Sell | -191,194 | -4.1% | 4,486,690 | $254.71M | Q1 2026 | May 15, 2026 |
| Janus Henderson Group Plc | Buy | +181,792 | +13.3% | 1,551,117 | $88.10M | Q1 2026 | May 15, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +176,783 | +12.2% | 1,620,752 | $92.01M | Q1 2026 | May 15, 2026 |
| Ancora Advisors Llc | Sell | -172,326 | -45.9% | 203,289 | $11.54M | Q1 2026 | May 15, 2026 |
| Barclays Plc | Buy | +165,006 | +114.8% | 308,725 | $17.53M | Q1 2026 | May 15, 2026 |
| Westwood Holdings Group Inc | Sell | -142,299 | -10.3% | 1,239,186 | $70.35M | Q1 2026 | May 15, 2026 |
| Hotchkis & Wiley Capital Management Llc | Sell | -133,127 | -45.7% | 158,026 | $8.97M | Q1 2026 | May 15, 2026 |
| Voloridge Investment Management, Llc | Sell | -132,738 | -44.2% | 167,596 | $9.51M | Q1 2026 | May 15, 2026 |
| Tidal Investments Llc | Buy | +120,572 | — | 120,572 | $6.84M | Q1 2026 | May 15, 2026 |
| Castleark Management Llc | Buy | +119,350 | — | 119,350 | $6.78M | Q1 2026 | May 15, 2026 |
| Susquehanna International Group, Llp | Sell | -104,911 | -23.6% | 339,083 | $19.25M | Q1 2026 | May 15, 2026 |
| Woodline Partners Lp | Buy | +98,714 | +38.4% | 355,936 | $20.21M | Q1 2026 | May 15, 2026 |
| Goldman Sachs Group Inc | Buy | +90,625 | +2.8% | 3,290,936 | $186.83M | Q1 2026 | May 15, 2026 |
| Frontier Capital Management Co Llc | Buy | +88,667 | +13.6% | 742,221 | $42.14M | Q1 2026 | May 15, 2026 |
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.
Related ATMU Institutional Insights
- ATMU Overview
- ATMU 13F Institutional Holders
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- Industrials Sector Institutional Ownership
- Industrials Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
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- ATMU Insider Trading & SEC Form 4 Activity
- ATMU Articles
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