DaveManuel.com · Institutional Ownership · Who Owns It
ATMUS FILTRATION TECHNOLOGIE (ATMU)
Institutional ownership reported to the SEC as of Q2 2026, across 14 quarters.
336
Reporting holders
$4.5B
Reported value
107.4%
Of shares outstanding
0.0%
Calls
0.0%
Puts
-16
Holder change
Institutions report 87,645,717 shares against 81,595,527 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $631.6M | 12,387,072 | 0.01% | 8q | +81.9%+$284.3M |
| FMR LLC | $271.1M | 5,316,383 | 0.01% | 13q | +7.7%+$19.3M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $234.8M | 4,604,869 | 0.01% | 2q | +24.8%+$46.7M |
| Invesco Ltd. | $227.3M | 4,457,550 | 0.02% | 11q | +33.3%+$56.8M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $223.8M | 4,388,256 | 0.02% | 13q | -2.2%-$5.0M |
| VANGUARD CAPITAL MANAGEMENT LLC | $184.1M | 3,609,746 | 0.00% | 2q | +1.2%+$2.2M |
| STATE STREET CORP | $166.0M | 3,256,278 | 0.00% | 12q | +71.8%+$69.4M |
| GOLDMAN SACHS GROUP INC | $148.1M | 2,903,771 | 0.01% | 13q | -11.8%-$19.7M |
| GEODE CAPITAL MANAGEMENT, LLC | $146.3M | 2,868,271 | 0.01% | 12q | +8.4%+$11.4M |
| NEUBERGER BERMAN GROUP LLC | $123.4M | 2,420,647 | 0.08% | 3q | +106.2%+$63.6M |
| T. Rowe Price Investment Management, Inc. | $91.0M | 1,784,618 | 0.06% | 7q | +12.9%+$10.4M |
| Channing Capital Management, LLC | $88.0M | 1,725,956 | 2.03% | 5q | +24.5%+$17.3M |
| Jupiter Topco LLC | $83.2M | 1,631,709 | 0.03% | new | FIRST |
| MORGAN STANLEY | $82.5M | 1,618,166 | 0.00% | 13q | -6.8%-$6.1M |
| FIRST TRUST ADVISORS LP | $80.9M | 1,586,834 | 0.05% | 9q | -28.0%-$31.4M |
| DIMENSIONAL FUND ADVISORS LP | $74.5M | 1,460,934 | 0.01% | 9q | +12.1%+$8.1M |
| WELLINGTON MANAGEMENT GROUP LLP | $73.7M | 1,445,763 | 0.01% | 13q | +4.3%+$3.0M |
| WESTWOOD HOLDINGS GROUP INC | $71.2M | 1,397,165 | 0.54% | 5q | +12.7%+$8.1M |
| MANGROVE PARTNERS IM, LLC | $61.8M | 1,211,236 | 4.06% | 12q | -7.9%-$5.3M |
| FRONTIER CAPITAL MANAGEMENT CO LLC | $59.0M | 1,157,930 | 0.55% | 8q | +56.0%+$21.2M |
| Port Capital LLC | $52.7M | 1,034,293 | 2.15% | 4q | +13.8%+$6.4M |
| ROYCE & ASSOCIATES LP | $50.7M | 995,247 | 0.41% | 13q | +28.0%+$11.1M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $48.8M | 957,068 | 0.01% | 12q | +1.7%+$838.4K |
| Nuveen, LLC | $47.4M | 930,518 | 0.01% | 6q | -35.6%-$26.2M |
| RAYMOND JAMES FINANCIAL INC | $46.7M | 915,569 | 0.01% | 7q | +11.4%+$4.8M |
| NORTHERN TRUST CORP | $43.5M | 852,441 | 0.01% | 12q | +17.3%+$6.4M |
| MARSHALL WACE, LLP | $41.1M | 806,251 | 0.03% | 10q | +149.9%+$24.7M |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $39.2M | 767,841 | 0.03% | 13q | +1.2%+$460.6K |
| Boston Trust Walden Corp | $36.2M | 709,764 | 0.28% | 3q | -5.4%-$2.1M |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $35.8M | 702,658 | 0.23% | 3q | -5.1%-$1.9M |
| Woodline Partners LP | $31.0M | 607,471 | 0.10% | 6q | +70.7%+$12.8M |
| VANGUARD FIDUCIARY TRUST CO | $29.8M | 583,865 | 0.01% | 2q | +3.5%+$1.0M |
| Bank of New York Mellon Corp | $29.5M | 578,864 | 0.00% | 12q | +60.9%+$11.2M |
| TEACHER RETIREMENT SYSTEM OF TEXAS | $27.2M | 533,685 | 0.07% | 8q | +12.5%+$3.0M |
| Aberdeen Group plc | $26.6M | 521,724 | 0.04% | 9q | +39.9%+$7.6M |
| Boston Partners | $25.3M | 494,688 | 0.02% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $24.7M | 484,705 | 0.00% | 13q | -45.8%-$20.8M |
| PRINCIPAL FINANCIAL GROUP INC | $24.6M | 482,392 | 0.01% | 10q | +486.3%+$20.4M |
| D. E. Shaw & Co., Inc. | $24.6M | 482,029 | 0.01% | 11q | -70.3%-$58.1M |
| FEDERATED HERMES, INC. | $24.4M | 478,265 | 0.04% | 11q | -1.9%-$460.1K |
| NEW YORK STATE COMMON RETIREMENT FUND | $23.3M | 457,331 | 0.03% | 12q | +26.3%+$4.8M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $20.7M | 405,168 | 0.06% | 6q | -4.9%-$1.1M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $20.6M | 403,485 | 0.01% | 10q | -50.7%-$21.2M |
| AMERIPRISE FINANCIAL INC | $20.5M | 401,126 | 0.00% | 13q | +50.9%+$6.9M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $20.2M | 395,982 | 0.03% | 2q | +39.3%+$5.7M |
| GW&K Investment Management, LLC | $19.9M | 390,392 | 0.16% | 11q | -11.1%-$2.5M |
| JPMORGAN CHASE & CO | $19.8M | 387,641 | 0.00% | 13q | -19.5%-$4.8M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $19.6M | 383,637 | 0.01% | 8q | -61.6%-$31.4M |
| VICTORY CAPITAL MANAGEMENT INC | $19.3M | 378,117 | 0.01% | 12q | +34.0%+$4.9M |
| UBS Group AG | $19.0M | 372,005 | 0.00% | 13q | -2.5%-$493.1K |
| Allspring Global Investments Holdings, LLC | $18.4M | 370,081 | 0.03% | 13q | +43.9%+$5.6M |
| Public Sector Pension Investment Board | $16.7M | 326,823 | 0.04% | new | NEW |
| Medina Value Partners, LLC | $16.3M | 318,986 | 3.19% | 13q | +40.9%+$4.7M |
| ALTRINSIC GLOBAL ADVISORS LLC | $15.1M | 296,885 | 0.56% | 5q | +26.5%+$3.2M |
| LOOMIS SAYLES & CO L P | $14.7M | 288,585 | 0.02% | 10q | -1.3%-$192.8K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $13.4M | 262,643 | 0.02% | 3q | -42.2%-$9.8M |
| AMERICAN CENTURY COMPANIES INC | $10.1M | 198,836 | 0.00% | 13q | +23.4%+$1.9M |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | $10.1M | 197,796 | 0.03% | 12q | +25.2%+$2.0M |
| RHUMBLINE ADVISERS | $10.0M | 196,800 | 0.01% | 12q | +88.1%+$4.7M |
| Legal & General Group Plc | $9.5M | 186,323 | 0.00% | 12q | +163.6%+$5.9M |
| WELLS FARGO & COMPANY/MN | $9.0M | 176,263 | 0.00% | 13q | +52.6%+$3.1M |
| Swiss National Bank | $8.4M | 163,849 | 0.00% | 12q | +1.6%+$132.6K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $7.9M | 155,476 | 0.00% | 10q | +16.1%+$1.1M |
| Ancora Advisors LLC | $7.1M | 138,859 | 0.14% | 9q | -31.7%-$3.3M |
| Russell Investments Group, Ltd. | $6.6M | 130,054 | 0.01% | 11q | -37.6%-$4.0M |
| ALLIANCEBERNSTEIN L.P. | $6.6M | 116,783 | 0.00% | 10q | +22.3%+$1.2M |
| Tidal Investments LLC | $6.3M | 123,691 | 0.01% | 2q | +2.6%+$159.0K |
| PRENTISS SMITH & CO INC | $6.1M | 120,486 | 3.37% | 8q | +13.0%+$704.8K |
| PANAGORA ASSET MANAGEMENT INC | $6.1M | 119,435 | 0.02% | 4q | -41.5%-$4.3M |
| Thrivent Financial for Lutherans | $6.0M | 118,639 | 0.01% | 10q | +56.5%+$2.2M |
| CITADEL ADVISORS LLC | $6.0M incl. $1.6M options CALL+PUT | 87,448 | 0.00% | 13q | -62.1%-$9.9M |
| Tema ETFs LLC | $5.4M | 105,917 | 0.17% | 7q | +3.9%+$201.9K |
| Vest Financial, LLC | $5.3M | 103,353 | 0.06% | 6q | -29.1%-$2.2M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $4.8M | 94,700 | 0.00% | 12q | -2.8%-$141.0K |
| STATE OF WISCONSIN INVESTMENT BOARD | $4.8M | 94,020 | 0.01% | 12q | +20.0%+$799.3K |
| FIFTH THIRD BANCORP | $4.8M | 93,503 | 0.01% | 2q | +90.1%+$2.3M |
| PRUDENTIAL FINANCIAL INC | $4.7M | 92,175 | 0.01% | 8q | -29.1%-$1.9M |
| FRANKLIN RESOURCES INC | $4.6M | 91,098 | 0.00% | 13q | -2.4%-$115.5K |
| DEUTSCHE BANK AG\ | $4.6M | 90,521 | 0.00% | 12q | -68.1%-$9.8M |
| AQR CAPITAL MANAGEMENT LLC | $4.6M | 89,324 | 0.00% | 9q | -18.9%-$1.1M |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $4.3M | 85,218 | 0.08% | 2q | +839.6%+$3.9M |
| SEI INVESTMENTS CO | $4.1M | 80,334 | 0.00% | 13q | -51.1%-$4.3M |
| AXIOM INVESTORS LLC /DE | $4.1M | 80,165 | 0.04% | 3q | -60.6%-$6.3M |
| Susquehanna Portfolio Strategies, LLC | $4.0M | 79,063 | 0.06% | 6q | -31.1%-$1.8M |
| Marathon Partners Equity Management, LLC | $3.9M | 77,000 | 3.66% | 7q | +2.7%+$102.0K |
| VOYA INVESTMENT MANAGEMENT LLC | $3.8M | 74,959 | 0.00% | 10q | -1.6%-$62.9K |
| Verition Fund Management LLC | $3.8M | 74,880 | 0.02% | new | NEW |
| Moody Aldrich Partners LLC | $3.7M | 72,398 | 0.66% | 9q | -21.4%-$1.0M |
| EFG International AG | $3.7M | 72,274 | 0.07% | 2q | +40.7%+$1.1M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $3.4M | 66,915 | 0.00% | 5q | +0.9%+$30.3K |
| Connor, Clark & Lunn Investment Management Ltd. | $3.2M | 63,099 | 0.01% | 2q | +1346.9%+$3.0M |
| Emerald Investment Advisers, LLC | $3.2M | 62,996 | 0.21% | 2q | +737.6%+$2.8M |
| Livforsakringsbolaget Skandia, Omsesidigt | $3.1M | 61,600 | 0.10% | 8q | -40.5%-$2.1M |
| VANGUARD ASSET MANAGEMENT, Ltd | $3.1M | 61,410 | 0.00% | 2q | +9.6%+$273.9K |
| Jain Global LLC | $3.1M | 60,343 | 0.01% | 6q | +37.8%+$843.8K |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | $3.1M | 59,984 | 0.01% | 6q | +24.5%+$601.4K |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY | $2.9M | 56,771 | 0.02% | 6q | +54.4%+$1.0M |
| NORGES BANK | $2.7M | 53,213 | 0.00% | 2q | HELD |
| CITIGROUP INC | $2.7M | 53,096 | 0.00% | 12q | +10.9%+$266.4K |
| TD Asset Management Inc | $2.7M | 52,972 | 0.00% | 7q | -1.4%-$37.8K |
Showing the largest 100 of 336 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-26 | 2026-10-21 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-01 | Disher Stephanie | Chief Executive Officer | Sold | 25,652 | $1.2M |
| 2026-06-01 | Kienzler Jack | Chief Financial Officer | Sold | 5,132 | $232.2K |
| 2026-08-17 | Swan Renee | Chief People Officer | Sold | 3,870 | $197.0K |
| 2026-06-01 | Masters Charles | Senior Vice President | Sold | 2,890 | $130.8K |
| 2026-06-01 | Swan Renee | Chief People Officer | Sold | 2,566 | $116.1K |
| 2026-05-12 | HAGGERTY GRETCHEN R | Director | Bought | 1,973 | $110.0K ×3 |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 72 | $26.3M | 605,467 | 13 | 25 | 15 | 0.0% |
| Q2 2026 | 336 | $4.5B | 87,645,717 | 56 | 121 | 101 | 0.0% |
| Q1 2026 | 352 | $4.8B | 83,629,390 | 62 | 124 | 101 | 0.0% |
| Q4 2025 | 314 | $4.4B | 83,645,579 | 47 | 111 | 96 | 0.6% |
| Q3 2025 | 292 | $3.8B | 83,365,885 | 45 | 80 | 115 | 0.7% |
| Q2 2025 | 277 | $3.1B | 84,308,424 | 34 | 92 | 97 | 0.2% |
| Q1 2025 | 276 | $3.1B | 83,515,411 | 32 | 92 | 91 | 0.4% |
| Q4 2024 | 287 | $3.3B | 83,652,756 | 36 | 90 | 87 | 0.5% |
| Q3 2024 | 279 | $3.2B | 84,171,263 | 69 | 78 | 86 | 1.0% |
| Q2 2024 | 238 | $2.6B | 88,019,651 | 68 | 76 | 60 | 2.4% |
| Q1 2024 | 234 | $3.3B | 95,867,460 | 151 | 67 | 13 | 7.2% |
| Q4 2023 | 99 | $700.6M | 28,499,033 | 26 | 39 | 20 | 4.4% |
| Q3 2023 | 85 | $483.1M | 22,653,128 | 41 | 27 | 13 | 2.2% |
| Q2 2023 | 67 | $385.5M | 17,548,478 | 67 | 0 | 0 | 0.0% |