ATMU Atmus Filtration Technologies Inc.
Atmus Filtration Technologies Inc. (ATMU) Institutional Ownership
What the institutions did with ATMU last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 12.4M | 14.1% |
| FMR LLC | 5.3M | 6.1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.6M | 5.3% |
| Invesco Ltd. | 4.5M | 5.1% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 4.4M | 5.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.6M | 4.1% |
| STATE STREET CORP | 3.3M | 3.7% |
| GOLDMAN SACHS GROUP INC | 2.9M | 3.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 2.9M | 3.3% |
| NEUBERGER BERMAN GROUP LLC | 2.4M | 2.8% |
| T. Rowe Price Investment Management, Inc. | 1.8M | 2.0% |
| Channing Capital Management, LLC | 1.7M | 2.0% |
| Jupiter Topco LLC | 1.6M | 1.9% |
| MORGAN STANLEY | 1.6M | 1.8% |
| FIRST TRUST ADVISORS LP | 1.6M | 1.8% |
| DIMENSIONAL FUND ADVISORS LP | 1.5M | 1.7% |
| WELLINGTON MANAGEMENT GROUP LLP | 1.4M | 1.6% |
| WESTWOOD HOLDINGS GROUP INC | 1.4M | 1.6% |
| MANGROVE PARTNERS IM, LLC | 1.2M | 1.4% |
| FRONTIER CAPITAL MANAGEMENT CO LLC | 1.2M | 1.3% |
| Port Capital LLC | 1.0M | 1.2% |
| ROYCE & ASSOCIATES LP | 995.2K | 1.1% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 957.1K | 1.1% |
| Nuveen, LLC | 930.5K | 1.1% |
| RAYMOND JAMES FINANCIAL INC | 915.6K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BlackRock, Inc. | Increased | 6.8M | 12.4M | +5.6M |
| STATE STREET CORP | Increased | 1.9M | 3.3M | +1.4M |
| NEUBERGER BERMAN GROUP LLC | Increased | 1.2M | 2.4M | +1.2M |
| D. E. Shaw & Co., Inc. | Reduced | 1.6M | 482.0K | -1.1M |
| Invesco Ltd. | Increased | 3.3M | 4.5M | +1.1M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 3.7M | 4.6M | +915.4K |
| Parsifal Capital Management, LP | Sold Out | 789.0K | 0 | -789.0K |
| Qube Research & Technologies Ltd | Sold Out | 741.2K | 0 | -741.2K |
| FIRST TRUST ADVISORS LP | Reduced | 2.2M | 1.6M | -616.0K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 999.5K | 383.6K | -615.9K |
| ALGERT GLOBAL LLC | Sold Out | 514.9K | 0 | -514.9K |
| Nuveen, LLC | Reduced | 1.4M | 930.5K | -514.2K |
| Boston Partners | New | 0 | 494.7K | +494.7K |
| MARSHALL WACE, LLP | Increased | 322.6K | 806.3K | +483.6K |
| JANE STREET GROUP, LLC | Reduced | 426.6K | 10.3K | -416.3K |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Increased | 742.2K | 1.2M | +415.7K |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Reduced | 818.9K | 403.5K | -415.4K |
| BANK OF AMERICA CORP /DE/ | Reduced | 893.6K | 484.7K | -408.9K |
| PRINCIPAL FINANCIAL GROUP INC | Increased | 82.3K | 482.4K | +400.1K |
| GOLDMAN SACHS GROUP INC | Reduced | 3.3M | 2.9M | -387.2K |
| FMR LLC | Increased | 4.9M | 5.3M | +378.6K |
| Channing Capital Management, LLC | Increased | 1.4M | 1.7M | +340.0K |
| Public Sector Pension Investment Board | New | 0 | 326.8K | +326.8K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 339.1K | 33.5K | -305.5K |
| BARCLAYS PLC | Reduced | 308.7K | 13.9K | -294.8K |
| Schonfeld Strategic Advisors LLC | Sold Out | 286.7K | 0 | -286.7K |
| Woodline Partners LP | Increased | 355.9K | 607.5K | +251.5K |
| KENNEDY CAPITAL MANAGEMENT LLC | Reduced | 275.2K | 37.5K | -237.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 2.6M | 2.9M | +223.2K |
| Bank of New York Mellon Corp | Increased | 359.7K | 578.9K | +219.2K |
| ROYCE & ASSOCIATES LP | Increased | 777.7K | 995.2K | +217.5K |
| T. Rowe Price Investment Management, Inc. | Increased | 1.6M | 1.8M | +203.9K |
| DEUTSCHE BANK AG\ | Reduced | 283.4K | 90.5K | -192.9K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | Reduced | 454.6K | 262.6K | -192.0K |
| Assenagon Asset Management S.A. | Sold Out | 181.9K | 0 | -181.9K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Sold Out | 167.6K | 0 | -167.6K |
| WESTWOOD HOLDINGS GROUP INC | Increased | 1.2M | 1.4M | +158.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.3M | 1.5M | +158.0K |
| Aberdeen Group plc | Increased | 372.8K | 521.7K | +148.9K |
| CITADEL ADVISORS LLC | Reduced | 230.5K | 87.4K | -143.0K |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 139.7K | 3.1K | -136.6K |
| AMERIPRISE FINANCIAL INC | Increased | 265.9K | 401.1K | +135.2K |
| NORTHERN TRUST CORP | Increased | 726.5K | 852.4K | +125.9K |
| Port Capital LLC | Increased | 908.7K | 1.0M | +125.6K |
| AXIOM INVESTORS LLC /DE | Reduced | 203.7K | 80.2K | -123.5K |
| CASTLEARK MANAGEMENT LLC | Sold Out | 119.4K | 0 | -119.4K |
| MORGAN STANLEY | Reduced | 1.7M | 1.6M | -118.8K |
| MILLENNIUM MANAGEMENT LLC | Sold Out | 118.6K | 0 | -118.6K |
| DARK FOREST CAPITAL MANAGEMENT LP | Sold Out | 116.3K | 0 | -116.3K |
| Legal & General Group Plc | Increased | 70.7K | 186.3K | +115.6K |
| BAR HARBOR WEALTH MANAGEMENT | Sold Out | 115.6K | 0 | -115.6K |
| Allspring Global Investments Holdings, LLC | Increased | 257.3K | 370.1K | +112.8K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Increased | 284.2K | 396.0K | +111.8K |
| OP Asset Management Ltd | Reduced | 122.3K | 11.8K | -110.5K |
| MANGROVE PARTNERS IM, LLC | Reduced | 1.3M | 1.2M | -104.0K |
| Jefferies Financial Group Inc. | Sold Out | 100.5K | 0 | -100.5K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 4.5M | 4.4M | -98.4K |
| VICTORY CAPITAL MANAGEMENT INC | Increased | 282.3K | 378.1K | +95.9K |
| NEW YORK STATE COMMON RETIREMENT FUND | Increased | 362.2K | 457.3K | +95.1K |
| RAYMOND JAMES FINANCIAL INC | Increased | 821.7K | 915.6K | +93.8K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.