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Disclosery

ATMU ATMUS FILTRATION TECHNOLOGIE

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COM (common), issuer CIK 1921963

342 managers (351 13F filers) reported a position in ATMU shares at 2026-03-31, 83,629,327 shares in all. 62 filers opened a position and 27 filers sold out during the quarter.

Managers
342
13F filers
351
New
62
Added
126
Reduced
103
Sold out
27
Shares held by filers
83,629,327

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …7,998$454K0.01%-4,70213F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…7,699$437K<0.01%new13F-HRTimeline
Empirical Financial Services, LLC d.b.a…7,678$436K0.01%+1,22713F-HRTimeline
Emerald Investment Advisers, LLCin group EMERALD ADVISERS, LLC7,521$427K0.04%13F-HRTimelineGroup
BURNEY CO/7,440$422K0.01%-4,09513F-HRTimeline
JAG CAPITAL MANAGEMENT, LLC7,187$408K0.05%+1,55713F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC7,062$401K0.03%+56113F-HRTimeline
ELEVATION POINT WEALTH PARTNERS, LLC6,880$391K0.01%new13F-HRTimeline
AXQ CAPITAL, LP6,825$387K0.05%+2,09313F-HRTimeline
Vestcor Inc6,801$386K0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…6,782$385K0.01%013F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP6,573$373K<0.01%new13F-HRTimelineGroup
MACKENZIE FINANCIAL CORP6,479$368K<0.01%-5,17513F-HRTimeline
Empowered Funds, LLC6,423$365K<0.01%new13F-HR/ATimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…6,407$364K<0.01%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…6,324$359K0.01%+58413F-HRTimelineGroup
STOREBRAND ASSET MANAGEMENT AS6,307$358K<0.01%013F-HRTimeline
Cornerstone Investment Partners, LLC6,288$357K0.01%+1,44313F-HRTimeline
Hillsdale Investment Management Inc.6,160$350K0.01%+6,00013F-HRTimeline
Cornerstone Wealth Management, LLC6,145$349K0.02%-29213F-HRTimeline
Mariner, LLCin group Mariner, LLC6,072$344K<0.01%-2,00313F-HRTimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd5,993$340K0.01%new13F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC5,725$325K<0.01%+5,39513F-HRTimeline
Prospera Financial Services Inc5,491$312K0.01%-27413F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\5,307$301K<0.01%-84313F-HRTimelineGroup
CWM, LLCin group CWM, LLC5,283$300K<0.01%+33413F-HRTimelineGroup
CIBC Bancorp USA Inc.in group CIBC Bancorp USA Inc.5,125$291K<0.01%13F-HRTimelineGroup
HighTower Advisors, LLC4,912$279K<0.01%-99113F-HRTimeline
State of Alaska, Department of Revenue4,874$276K<0.01%013F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV4,843$275K<0.01%new13F-HRTimeline
Abel Hall, LLC4,805$273K0.06%+69613F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…4,690$266K<0.01%013F-HRTimeline
Merit Financial Group, LLC4,616$262K<0.01%+30213F-HRTimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…4,497$255K<0.01%+41013F-HRTimelineGroup
Orion Porfolio Solutions, LLC4,492$255K<0.01%+7313F-HRTimeline
Aureus Asset Management, LLC4,422$251K0.02%new13F-HRTimeline
Cetera Investment Advisers4,393$249K<0.01%+14213F-HRTimeline
Connor, Clark & Lunn Investment Managem…4,361$248K<0.01%new13F-HRTimeline
Inspire Advisors, LLCin group Inspire Investing, LLC4,300$244K0.02%new13F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP4,266$242K<0.01%-8413F-HRTimelineGroup
ANCHYRA PARTNERS LLC4,256$242K0.07%+26413F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding4,232$240K-5,639Timeline
ZWJ INVESTMENT COUNSEL INC4,214$239K0.01%-96913F-HRTimeline
OXFORD ASSET MANAGEMENT LLP4,031$229K0.09%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
HOHIMER WEALTH MANAGEMENT, LLC3,991$227K0.03%-3,14113F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS3,929$223K<0.01%new13F-HRTimelineGroup
CLIFFORD SWAN INVESTMENT COUNSEL LLC3,835$218K0.01%new13F-HRTimeline
Quotient Wealth Partners, LLC3,787$215K0.01%-11813F-HRTimeline
Aristides Capital LLC3,721$211K0.07%-2,00413F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC3,688$210K<0.01%013F-HRTimelineGroup
ST GERMAIN D J CO INCin group ST GERMAIN D J CO INC3,568$203K0.01%-5713F-HRTimelineGroup
MQS Management LLC3,552$202K0.14%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,726$155K<0.01%+18513F-HRTimelineGroup
CVA Family Office, LLC2,693$153K0.02%+4913F-HRTimeline
MEEDER ASSET MANAGEMENT INCin group Meeder Advisory Services, Inc.2,680$152K0.01%new13F-HRTimelineGroup
KBC Group NVin group KBC Group NV2,527$143K<0.01%013F-HRTimelineGroup
GAMMA Investing LLC2,457$139K0.01%+23413F-HRTimeline
Farther Finance Advisors, LLC2,353$137K<0.01%+3713F-HRTimeline
Bayforest Capital Ltd2,099$119K0.13%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC1,819$103K0.01%-14013F-HRTimeline
Employees Retirement System of Texas1,650$94K<0.01%new13F-HRTimeline
Geneos Wealth Management Inc.1,332$75.6K<0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1,295$73.5K<0.01%+44613F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,250$71K<0.01%-7013F-HRTimelineGroup
Larson Financial Group LLC992$56.3K<0.01%+43313F-HRTimeline
Advisory Services Network, LLC969$55K<0.01%new13F-HRTimeline
Smartleaf Asset Management LLC959$52.6K<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC809$45.9K<0.01%013F-HRTimeline
Versant Capital Management, Inc800$45.4K<0.01%+62313F-HRTimeline
GHP Investment Advisors, Inc.769$43.7K<0.01%new13F-HRTimeline
Sterling Capital Management LLC745$42.3K<0.01%-21613F-HRTimeline
ESSEX INVESTMENT MANAGEMENT CO LLC713$40.5K0.01%013F-HRTimeline
Arax Advisory Partners658$37.3K<0.01%+3113F-HRTimeline
ADIRONDACK TRUST CO600$34.1K0.01%new13F-HRTimeline
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.555$31.5K<0.01%new13F-HRTimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.406$23K<0.01%+3413F-HR/ATimelineGroup
Parkside Financial Bank & Trust400$22.7K<0.01%+17113F-HRTimeline
Greykasell Wealth Strategies, Inc.400$22.7K0.01%013F-HRTimeline
Kemnay Advisory Services Inc.398$22.6K<0.01%-59813F-HRTimeline
Allworth Financial LP392$22.3K<0.01%+8713F-HRTimeline
Ares Financial Consulting, LLC360$20.9K0.02%013F-HRTimeline
Cedar Mountain Advisors, LLC293$16.6K<0.01%new13F-HRTimeline
Covestor Ltd259$15K0.01%-24913F-HRTimeline
MAI Capital Management258$14.6K<0.01%+18313F-HRTimeline
Parallel Advisors, LLC258$14.6K<0.01%+8513F-HR/ATimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…254$14.4K<0.01%+15213F-HR/ATimelineGroup
Root Financial Partners, LLC243$13.8K<0.01%+3413F-HRTimeline
WPG Advisers, LLC208$11.8K0.01%+7013F-HRTimeline
CALDWELL SUTTER CAPITAL, INC.203$11.5K<0.01%-10013F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC195$11.1K<0.01%+8413F-HRTimelineGroup
SIGNATUREFD, LLC180$10.2K<0.01%+14013F-HRTimeline
EASTERN BANK145$8.23K<0.01%013F-HRTimeline
HOLLENCREST CAPITAL MANAGEMENT144$8.18K<0.01%013F-HRTimeline
PlanVest Financial, Inc132$7.49K0.01%13F-HRTimeline
MassMutual Private Wealth & Trust, FSB120$6.81K<0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…116$6.58K<0.01%013F-HRTimelineGroup
Retirement Wealth Solutions LLC115$6.53K<0.01%013F-HRTimeline
Bare Financial Services, Inc99$5.62K<0.01%+913F-HRTimeline
Asset Dedication, LLC96$5.45K<0.01%013F-HRTimeline
SIMPLEX TRADING, LLC93$5.28K<0.01%new13F-HRTimeline
WOLFF WIESE MAGANA LLC90$5.11K<0.01%013F-HRTimeline
CENTRAL TRUST Co88$5K<0.01%013F-HRTimeline
Kilter Group LLC84$4.77K<0.01%013F-HRTimeline
BAYBAN74$4.2K<0.01%new13F-HRTimeline
CREATIVE FINANCIAL DESIGNS INC /ADV72$4.09K<0.01%013F-HRTimeline
Altshuler Shaham Ltd21$4.03K<0.01%new13F-HRTimeline
Owl Creek Wealth Partners LLC60$3.41K<0.01%13F-HRTimeline
THURSTON, SPRINGER, MILLER, HERD & TITA…60$3.41K<0.01%013F-HRTimeline
West Financial Advisors, LLC50$2.86K<0.01%013F-HRTimeline
Sapience Investments, LLC49$2.78K0.36%new13F-HRTimeline
SouthState Bank Corpin group SouthState Bank Corp48$2.73K<0.01%013F-HRTimelineGroup
WHITTIER TRUST CO OF NEVADA INC45$2.71K<0.01%new13F-HRTimeline
CFG Wealth Management Services, Inc.45$2.56K<0.01%013F-HRTimeline
NewEdge Advisors, LLC43$2.45K<0.01%013F-HR/ATimeline
BARROW HANLEY MEWHINNEY & STRAUSS LLC43$2.44K<0.01%new13F-HRTimeline
JFS WEALTH ADVISORS, LLC34$1.93K<0.01%-313F-HRTimeline
Fortitude Family Office, LLC34$1.93K<0.01%+1813F-HRTimeline
Keating Financial Advisory Services, In…31$1.76K<0.01%+113F-HRTimeline
IFP Advisors, Inc24$1.36K<0.01%013F-HRTimeline
SHP Wealth Management24$1.36K<0.01%new13F-HRTimeline
JPL Wealth Management, LLC20$1.14K<0.01%new13F-HR/ATimeline
Essential Partners LLC19$1.08K<0.01%013F-HRTimeline
Caitong International Asset Management …17$965<0.01%+1213F-HRTimeline
ZIONS BANCORPORATION, NATIONAL ASSOCIAT…13$738<0.01%new13F-HRTimeline
HHM Wealth Advisors, LLC12$682<0.01%013F-HRTimeline
NVWM, LLC12$681<0.01%013F-HRTimeline
Triumph Capital Management12$681<0.01%013F-HRTimeline
Bell Investment Advisors, Inc11$625<0.01%013F-HRTimeline
Bay Harbor Wealth Management, LLC11$624<0.01%+413F-HRTimeline
Steward Partners Investment Advisory, L…10$568<0.01%013F-HRTimeline
SJS Investment Consulting Inc.10$568<0.01%+413F-HRTimeline
Vermillion Wealth Management, Inc.6$341<0.01%new13F-HRTimeline
DiNuzzo Private Wealth, Inc.6$341<0.01%013F-HRTimeline
Rialto Wealth Management, LLC6$341<0.01%013F-HRTimeline
HARBOUR INVESTMENTS, INC.5$310<0.01%new13F-HRTimeline
PRIVATE TRUST CO NA5$284<0.01%013F-HRTimeline
HFM Investment Advisors, LLC5$284<0.01%+213F-HRTimeline
True Wealth Design, LLC4$228<0.01%013F-HRTimeline
Pinnacle Wealth Planning Services, Inc.3$170<0.01%new13F-HRTimeline
Dunhill Financial, LLC1$85<0.01%013F-HRTimeline
SBI Securities Co., Ltd.1$57<0.01%013F-HRTimeline
Capital Advisors, Ltd. LLC5$00%013F-HRTimelineValue filed as zero, left out of ratios.