Atmus Filtration Technologies Inc. hedge fund holdings
ATMUNYSE$44.12-1.84 (-4.00%)as of Oct 7, 2026
Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.
Price vs funds buying and selling
ATMU · close · 13FReported Aug 14, 2026Price vs funds buying and selling data
Showing the 1Y range: Oct 7, 2025 to Oct 7, 2026. Price (+0.0%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.Price and fund activity data
| Quarter | Funds buying | Funds selling | Bought | Sold | Filers | Reported |
|---|---|---|---|---|---|---|
| Q2 2025 | 96 | 95 | $313M | $274M | 259 | Aug 14, 2025 |
| Q3 2025 | 96 | 108 | $419M | $467M | 270 | Nov 14, 2025 |
| Q4 2025 | 118 | 95 | $478M | $442M | 292 | Feb 14, 2026 |
| Q1 2026 | 151 | 98 | $494M | $452M | 334 | May 15, 2026 |
| Q2 2026 | 134 | 139 | $836M | $658M | 311 | Aug 14, 2026 |
Quarterly action breakdown
Q2 2026
311 filersNew position
42$34.9M+684K sh
Increased
92$802M+15.7M sh
Reduced
79-$391M-7.66M sh
Out / sold
60-$268M-5.25M sh
Last 4 quarters · free
Reported Aug 14, 2026
| Fund | Action | Change in dollar | Value | % of portfolio | Reported |
|---|---|---|---|---|---|
| Eminence Capital, LP | Sell 100% | -$72.8M | $0 | Not reported | Jul 6, 2026 |
| Parsifal Capital Management, LP | Sell 100% | -$44.8M | $0 | 0.00% | Aug 13, 2026 |
| First Trust Advisors LP | Reduce 27.96% | -$31.4M | $80.9M | 0.05% | Aug 11, 2026 |
| Frontier Capital Management Co LLC | Added 56.01% | +$21.2M | $59M | 0.55% | Aug 14, 2026 |
| Massachusetts Financial Services Co | Reduce 50.73% | -$21.2M | $20.6M | 0.01% | Aug 3, 2026 |
| Channing Capital Management, LLC | Added 24.53% | +$17.3M | $88M | 2.03% | Jul 29, 2026 |
| Public Sector Pension Investment Board | New Buy | +$16.7M | $16.7M | 0.04% | Aug 13, 2026 |
| Kennedy Capital Management LLC | Reduce 86.37% | -$12.1M | $1.91M | 0.03% | Aug 14, 2026 |
| T. Rowe Price Investment Management, Inc. | Added 12.90% | +$10.4M | $91M | 0.06% | Aug 14, 2026 |
| Healthcare of Ontario Pension Plan Trust Fund | Reduce 42.23% | -$9.79M | $13.4M | 0.02% | Aug 13, 2026 |
| Voloridge Investment Management, LLC | Sell 100% | -$9.51M | $0 | 0.00% | Aug 14, 2026 |
| Westwood Holdings Group Inc | Added 12.75% | +$8.06M | $71.2M | 0.54% | Aug 14, 2026 |
| Aberdeen Group plc | Added 39.95% | +$7.59M | $26.6M | 0.04% | Jul 31, 2026 |
| Castleark Management LLC | Sell 100% | -$6.78M | $0 | 0.00% | Aug 14, 2026 |
| Bar Harbor Wealth Management | Sell 100% | -$6.56M | $0 | 0.00% | Jul 15, 2026 |
| Port Capital LLC | Added 13.82% | +$6.41M | $52.7M | 2.15% | Aug 14, 2026 |
| Axiom Investors LLC | Reduce 60.64% | -$6.3M | $4.09M | 0.04% | Aug 12, 2026 |
| Jefferies Financial Group Inc. | Sell 100% | -$5.7M | $0 | 0.00% | Aug 17, 2026 |
| Nomura Asset Management International Inc. | Added 39.33% | +$5.7M | $20.2M | 0.03% | Aug 14, 2026 |
| OP Asset Management Ltd | Reduce 90.32% | -$5.63M | $604K | 0.01% | Jul 28, 2026 |
| Medina Value Partners, LLC | Added 40.87% | +$4.72M | $16.3M | 3.19% | Aug 14, 2026 |
| Susquehanna Fundamental Investments, LLC | Added 839.56% | +$3.88M | $4.35M | 0.08% | Aug 14, 2026 |
| Canada Pension Plan Investment Board | Reduce 82.63% | -$3.11M | $653K | 0.00% | Aug 14, 2026 |
| Wellington Management Group LLP | Added 4.28% | +$3.03M | $73.7M | 0.01% | Aug 14, 2026 |
| Zacks Investment Management | Sell 100% | -$2.95M | $0 | 0.00% | Aug 13, 2026 |
| Emerald Investment Advisers, LLC | Added 737.60% | +$2.83M | $3.21M | 0.21% | Aug 12, 2026 |
| PDT Partners, LLC | Sell 100% | -$2.59M | $0 | 0.00% | Aug 14, 2026 |
| CWA Asset Management Group, LLC | Sell 100% | -$2.5M | $0 | 0.00% | Jul 14, 2026 |
| Fieldview Capital Management, LLC | Sell 100% | -$2.48M | $0 | 0.00% | Aug 14, 2026 |
| Renaissance Capital LLC | Sell 100% | -$2.47M | $0 | 0.00% | Aug 5, 2026 |
| Thrivent Financial for Lutherans | Added 56.46% | +$2.18M | $6.05M | 0.01% | Aug 14, 2026 |
| Vest Financial, LLC | Reduce 29.14% | -$2.17M | $5.27M | 0.06% | Jul 24, 2026 |
| Illinois Municipal Retirement Fund | New Buy | +$2.16M | $2.16M | 0.02% | Aug 12, 2026 |
| Convergence Investment Partners, LLC | Sell 100% | -$2.14M | $0 | 0.00% | Jul 31, 2026 |
| Livforsakringsbolaget Skandia, Omsesidigt | Reduce 40.48% | -$2.14M | $3.14M | 0.10% | Aug 18, 2026 |
| Boston Trust Walden Corp | Reduce 5.44% | -$2.08M | $36.2M | 0.28% | Jul 24, 2026 |
| Turas Capital Management LP | Sell 100% | -$2.04M | $0 | 0.00% | Aug 14, 2026 |
| Hotchkis & Wiley Capital Management LLC | Added 25.17% | +$2.03M | $10.1M | 0.03% | Aug 14, 2026 |
| Voleon Capital Management LP | Reduce 62.31% | -$1.96M | $1.18M | 0.02% | Aug 14, 2026 |
| Silvercrest Asset Management Group LLC | Reduce 5.13% | -$1.94M | $35.8M | 0.23% | Aug 14, 2026 |
| Susquehanna Portfolio Strategies, LLC | Reduce 31.06% | -$1.82M | $4.03M | 0.06% | Aug 14, 2026 |
| Jackson Creek Investment Advisors LLC | Sell 100% | -$1.67M | $0 | 0.00% | Aug 10, 2026 |
| Freestone Grove Partners LP | New Buy | +$1.66M | $1.66M | 0.01% | Aug 14, 2026 |
| Fox Run Management, L.L.C. | Sell 100% | -$1.59M | $0 | 0.00% | Aug 4, 2026 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | Sell 100% | -$1.51M | $0 | 0.00% | Aug 14, 2026 |
| Gallo Partners, LP | Sell 100% | -$1.41M | $0 | 0.00% | Aug 13, 2026 |
| State of Alaska, Department of Revenue | Added 551.83% | +$1.37M | $1.62M | 0.02% | Jul 20, 2026 |
| Graham Capital Management, L.P. | Sell 100% | -$1.3M | $0 | 0.00% | Aug 14, 2026 |
| Yousif Capital Management, LLC | New Buy | +$1.12M | $1.12M | 0.01% | Jul 16, 2026 |
| EFG International AG | Added 40.72% | +$1.07M | $3.69M | 0.07% | Aug 14, 2026 |
| William Blair Investment Management, LLC | Reduce 4.91% | -$1.07M | $20.7M | 0.06% | Aug 12, 2026 |
| Teachers Retirement System of the State of Kentucky | Added 54.39% | +$1.02M | $2.89M | 0.02% | Aug 12, 2026 |
| Moody Aldrich Partners LLC | Reduce 21.42% | -$1.01M | $3.69M | 0.66% | Jul 15, 2026 |
| Oregon Public Employees Retirement Fund | New Buy | +$948K | $948K | 0.01% | Jul 29, 2026 |
| Jain Global LLC | Added 37.79% | +$844K | $3.08M | 0.01% | Aug 14, 2026 |
| Vestcor Inc | Added 230.48% | +$799K | $1.15M | 0.03% | Aug 11, 2026 |
| IFG Advisory, LLC | New Buy | +$731K | $731K | 0.03% | Aug 14, 2026 |
| nVerses Capital, LLC | Sell 100% | -$716K | $0 | 0.00% | Aug 4, 2026 |
| Prentiss Smith & Co Inc | Added 12.96% | +$705K | $6.14M | 3.37% | Jul 30, 2026 |
| Integrated Quantitative Investments LLC | Added 45.67% | +$681K | $2.17M | 0.36% | Aug 14, 2026 |
| Diversified Trust Co | Sell 100% | -$656K | $0 | 0.00% | Jul 17, 2026 |
| Maryland State Retirement & Pension System | New Buy | +$610K | $610K | 0.01% | Jul 30, 2026 |
| Summit Global Investments | New Buy | +$606K | $606K | 0.03% | Aug 3, 2026 |
| Allstate Corp | New Buy | +$518K | $518K | 0.01% | Aug 13, 2026 |
| Advyzon Investment Management, LLC | Sell 100% | -$497K | $0 | 0.00% | Aug 14, 2026 |
| Stirlingshire Investments, Inc. | Sell 100% | -$477K | $0 | 0.00% | Jul 31, 2026 |
| Riverwater Partners LLC | Reduce 17.38% | -$471K | $2.24M | 0.66% | Aug 14, 2026 |
| Catalyst Funds Management Pty Ltd | Sell 100% | -$469K | $0 | 0.00% | Aug 10, 2026 |
| Axq Capital, LP | Sell 100% | -$387K | $0 | 0.00% | Aug 6, 2026 |
| Empowered Funds, LLC | Sell 100% | -$365K | $0 | 0.00% | Aug 17, 2026 |
| State of New Jersey Common Pension Fund D | Reduce 17.35% | -$348K | $1.66M | 0.01% | Aug 4, 2026 |
| IMC-Chicago, LLC | New Buy | +$300K | $300K | 0.00% | Aug 6, 2026 |
| Handelsbanken Fonder AB | Reduce 15.14% | -$296K | $1.66M | 0.00% | Jul 10, 2026 |
| Round Rock Advisors LLC | Reduce 45.59% | -$290K | $346K | 0.04% | Aug 12, 2026 |
| VANGUARD ASSET MANAGEMENT, Ltd | Added 9.59% | +$274K | $3.13M | 0.00% | Aug 13, 2026 |
| Aureus Asset Management, LLC | Sell 100% | -$251K | $0 | 0.00% | Aug 14, 2026 |
| Blueshift Asset Management, LLC | New Buy | +$244K | $244K | 0.06% | Aug 14, 2026 |
| Anchyra Partners LLC | Sell 100% | -$242K | $0 | 0.00% | Jul 23, 2026 |
| HITE Hedge Asset Management LLC | Added 25.39% | +$237K | $1.17M | 0.06% | Aug 14, 2026 |
| Profund Advisors LLC | New Buy | +$224K | $224K | 0.01% | Aug 11, 2026 |
| Clifford Swan Investment Counsel LLC | Sell 100% | -$218K | $0 | 0.00% | Aug 20, 2026 |
| Donaldson Capital Management, LLC | New Buy | +$215K | $215K | 0.01% | Aug 5, 2026 |
| Quotient Wealth Partners, LLC | Sell 100% | -$215K | $0 | 0.00% | Aug 3, 2026 |
| CIBC Asset Management Inc | New Buy | +$210K | $210K | 0.00% | Aug 3, 2026 |
| Tema ETFs LLC | Added 3.88% | +$202K | $5.4M | 0.17% | Jul 10, 2026 |
| MQS Management LLC | Sell 100% | -$202K | $0 | 0.00% | Aug 7, 2026 |
| Loomis Sayles & Co L P | Reduce 1.29% | -$193K | $14.7M | 0.02% | Aug 14, 2026 |
| Tidal Investments LLC | Added 2.59% | +$159K | $6.31M | 0.01% | Aug 13, 2026 |
| Vanguard Investments Australia, Ltd. | Added 13.14% | +$130K | $1.12M | 0.00% | Aug 13, 2026 |
| Sit Investment Associates Inc | New Buy | +$125K | $125K | 0.00% | Aug 12, 2026 |
| KLP Kapitalforvaltning As | Added 11.76% | +$122K | $1.16M | 0.00% | Aug 12, 2026 |
| Bayforest Capital Ltd | Sell 100% | -$119K | $0 | 0.00% | Aug 5, 2026 |
| Bessemer Group Inc | Reduce 59.79% | -$113K | $76K | 0.00% | Aug 12, 2026 |
| New Age Alpha Advisors, LLC | New Buy | +$106K | $106K | 0.00% | Aug 13, 2026 |
| Marathon Partners Equity Management, LLC | Added 2.67% | +$102K | $3.93M | 3.66% | Aug 14, 2026 |
| Quantinno Capital Management LP | Added 13.75% | +$99.1K | $819K | 0.00% | Aug 13, 2026 |
| Xponance LLC | Added 22.64% | +$98.4K | $533K | 0.00% | Aug 10, 2026 |
| Okabena Investment Services Inc | Reduce 15.67% | -$82.6K | $445K | 0.08% | Aug 4, 2026 |
| Inspire Advisors, LLC | Added 37.53% | +$82.3K | $302K | 0.02% | Aug 13, 2026 |
| Oppenheimer Asset Management Inc. | Reduce 20.03% | -$81.7K | $326K | 0.00% | Aug 3, 2026 |