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Disclosery

AMTM AMENTUM HOLDINGS INC

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Stock (common), issuer CIK 2011286

448 managers (461 13F filers) reported a position in AMTM shares at 2026-06-30, 218,818,266 shares in all. 54 filers opened a position and 74 filers sold out during the quarter.

Managers
448
13F filers
461
New
54
Added
145
Reduced
159
Sold out
74
Shares held by filers
218,818,266

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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
AMERICAN SECURITIES LLC45,026,743$931M24.79%013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.24,954,251$516M0.04%+3,480,47313F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.17,906,984$370M0.01%+65,70113F-HRTimelineGroup
VANGUARD GROUP INCgroup of 7 filers holding15,950,609$330M+254,160Timeline
PRIMECAP MANAGEMENT CO/CA/12,285,504$254M0.15%+200,21013F-HRTimeline
FMR LLCin group FMR LLC5,679,175$117M0.01%+100,78913F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP5,537,696$114M0.02%+1,750,27613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP5,151,772$106M<0.01%+72,73113F-HRTimelineGroup
FRONTIER CAPITAL MANAGEMENT CO LLC4,143,971$85.7M0.8%-786,23913F-HRTimeline
Troluce Capital Advisors LLC3,565,399$73.7M27.6%+2,565,39913F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,716,560$56.2M<0.01%-97,85513F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,711,866$56.1M0.01%+1,580,42813F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY2,662,329$55M<0.01%+427,41613F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…2,318,581$47.9M0.06%-466,55313F-HRTimelineGroup
THOMPSON SIEGEL & WALMSLEY LLC2,281,945$47.2M0.85%+756,06113F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC2,127,779$44M0.03%+1,496,72413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co2,120,102$43.8M0.01%+52,17213F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…2,105,802$43.5M0.07%+5,34513F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/2,042,897$42.2M<0.01%-362,14413F-HRTimelineGroup
SEGRA CAPITAL MANAGEMENT, LLC2,037,890$42.1M9.68%+425,16413F-HRTimeline
Verition Fund Management LLC2,019,334$41.7M0.29%+721,38813F-HR/ATimeline
VAN ECK ASSOCIATES CORPin group VAN ECK ASSOCIATES CORP1,988,898$41.1M0.03%+1,441,25413F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC1,974,191$40.8M0.04%+774,70013F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding1,794,908$37.1M-163,824Timeline
NORGES BANK1,516,193$31.3M<0.01%new13F-HRTimeline
Permian Investment Partners, LP1,433,028$29.6M3.36%-133,97213F-HRTimeline
683 Capital Management, LLCin group 683 Capital Management, LLC1,100,000$22.7M2.09%+325,00013F-HRTimelineGroup
LOOMIS SAYLES & CO L Pin group LOOMIS SAYLES & CO L P1,042,522$21.5M0.03%-38,81413F-HRTimelineGroup
Qube Research & Technologies Ltd1,034,395$21.4M0.02%+957,02613F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,029,892$21.3M<0.01%+45,78713F-HRTimelineGroup
CACTI ASSET MANAGEMENT LLC881,692$18.2M0.91%013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp878,084$18.2M<0.01%-30,51513F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…840,642$17.4M0.02%+126,81413F-HRTimelineGroup
AVENIR CORP811,726$16.8M2.04%-29,37313F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN750,214$15.5M<0.01%+113,54013F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC742,381$15.3M0.01%-2,34713F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding726,822$15M+178,993Timeline
Ancora Advisors LLCin group Ancora Advisors LLC715,652$14.8M0.29%+12,53313F-HRTimelineGroup
ROYCE & ASSOCIATES LP697,368$14.4M0.12%+147,59013F-HRTimeline
HRT FINANCIAL LP671,847$13.9M0.03%new13F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC670,684$13.9M0.01%+590,04613F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.649,984$13.4M0.02%-980,57913F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC601,900$12.4M<0.01%+94,05713F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP547,907$11.3M0.01%+319,82413F-HRTimelineGroup
Ruane, Cunniff & Goldfarb L.P.537,213$11.1M0.17%-1,085,76913F-HRTimeline
Public Sector Pension Investment Board528,821$10.9M0.03%-20,97613F-HR/ATimeline
FIRST NATIONAL BANK OF OMAHAgroup of 2 filers holding519,071$10.6M+258,325Timeline
Loews Corp500,000$10.3M0.08%new13F-HRTimeline
SHAPIRO CAPITAL MANAGEMENT LLC475,970$9.84M0.6%new13F-HRTimeline
Legacy Advisors, LLC9,065,677$9.07M0.85%+1,39913F-HRTimeline
Nuveen, LLCin group TIAA421,495$8.71M<0.01%-450,30013F-HRTimelineGroup
Arvin Capital Management LP416,705$8.61M1.61%-1,654,49513F-HRTimeline
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC402,130$8.31M0.02%+68,33013F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC387,973$8.02M0.15%+301,78113F-HRTimeline
De Lisle Partners LLP374,818$7.74M0.85%-5,00013F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC372,918$7.71M0.06%-15,94413F-HRTimelineGroup
Mawer Investment Management Ltd.369,557$7.64M0.05%+35,76713F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP365,096$7.55M0.17%-508,51413F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc349,048$7.21M<0.01%+14,15213F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC343,687$7.1M<0.01%+151,70813F-HRTimelineGroup
CenterBook Partners LP328,766$6.8M0.33%+185,06813F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC319,479$6.6M<0.01%-10,26613F-HRTimelineGroup
GRIZZLYROCK CAPITAL, LLC318,363$6.58M4.6%+29,25013F-HRTimeline
Swiss National Bank318,091$6.57M<0.01%+4,70013F-HRTimeline
Rovida Investment Management Ltd315,000$6.5M0.44%013F-HRTimeline
Aristotle Capital Boston, LLCin group ARISTOTLE INVESTMENT SERVICES…307,836$6.36M0.43%-37,14013F-HRTimelineGroup
EXCHANGE TRADED CONCEPTS, LLC305,286$6.31M0.03%+10,27813F-HR/ATimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP284,268$5.88M<0.01%-615,90913F-HRTimelineGroup
RHUMBLINE ADVISERS284,060$5.87M<0.01%-16,23313F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…281,815$5.83M0.01%+8,49913F-HRTimelineGroup
California Public Employees Retirement …266,383$5.51M<0.01%-10,66913F-HRTimeline
SG Americas Securities, LLC262,993$5.44M<0.01%-11,60913F-HRTimeline
Hudson Value Partners, LLC250,185$5.17M1.3%+46,27513F-HRTimeline
CSM Advisors, LLC243,814$5.04M0.11%+162,57313F-HRTimeline
AWH Capital, L.P.235,250$4.86M3.34%013F-HR/ATimeline
ExodusPoint Capital Management, LP226,289$4.68M0.04%new13F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC224,399$4.64M<0.01%-21,42513F-HRTimelineGroup
Hel Ved Capital Management Ltd214,000$4.42M0.62%+35,50013F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.191,488$3.96M<0.01%+125,31713F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO190,069$3.93M<0.01%-104,59913F-HRTimelineGroup
WEDGE CAPITAL MANAGEMENT L L P/NC187,832$3.88M0.06%+23,16613F-HRTimeline
Verbena Value LP186,200$3.85M0.64%new13F-HRTimeline
Telos Capital Management, Inc.185,611$3.84M0.34%-4,29013F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…183,223$3.79M<0.01%-1,33213F-HR/ATimeline
GAMCO Investors (Gabelli)group of 2 filers holding173,403$3.58M+8,289Timeline
North Growth Management Ltd.173,000$3.57M0.46%+1,00013F-HRTimeline
OpenArc Corporate Advisory, LLC170,291$3.52M0.04%-6113F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.group of 2 filers holding167,571$3.46M-29,455Timeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…167,354$3.46M0.05%+90,15813F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…161,992$3.35M0.01%-3,33713F-HRTimeline
Atom Investors LP160,876$3.33M0.3%+138,06113F-HRTimeline
Gotham Asset Management, LLC156,113$3.23M0.01%-364,92813F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/152,081$3.15M<0.01%+6,82813F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC151,780$3.14M<0.01%+104,96513F-HRTimelineGroup
Soviero Asset Management, LP150,000$3.1M1.5%-90,00013F-HRTimeline
Bryn Mawr Trust Advisors, LLC141,443$2.92M0.13%+24,57213F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC139,950$2.89M<0.01%-48013F-HRTimelineGroup
Focus Partners Wealthin group Focus Partners Wealth138,344$2.86M<0.01%-2,466,56713F-HRTimelineGroup
BESSEMER GROUP INCin group BESSEMER GROUP INC126,107$2.61M<0.01%+15513F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO119,174$2.6M<0.01%+34,40213F-HRTimelineGroup
South Dakota Investment Council121,837$2.52M0.04%-1,20013F-HRTimeline
SOROS FUND MANAGEMENT LLCin group SOROS FUND MANAGEMENT LLC118,276$2.44M0.03%+10,67013F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…117,135$2.42M<0.01%-3,73013F-HRTimeline
Natixis Investment Managersgroup of 2 filers holding115,401$2.38M+60,995Timeline
ALGERT GLOBAL LLC102,220$2.11M0.03%+1,21013F-HRTimeline
ALLIANCEBERNSTEIN L.P.79,944$2.08M<0.01%+6,13813F-HRTimeline
TWINBEECH CAPITAL LP99,727$2.06M0.37%new13F-HRTimeline
Strategic Global Advisors, LLC99,103$2.05M0.29%+3,38513F-HRTimeline
Quantinno Capital Management LP99,067$2.05M<0.01%-46,50713F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD98,425$2.03M<0.01%-3,55813F-HRTimeline
LPL Financial LLC96,430$1.99M<0.01%+7,63013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA92,041$1.9M<0.01%-139,70113F-HRTimelineGroup
Mraz, Amerine & Associates, Inc.90,200$1.86M0.27%+18,21513F-HRTimeline
Pine Valley Investments Ltd Liability Co89,488$1.85M0.08%+10,21313F-HRTimeline
Holocene Advisors, LP89,037$1.84M<0.01%-34,16013F-HRTimeline
Illinois Municipal Retirement Fund85,809$1.77M0.02%+2,40213F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management85,389$1.76M<0.01%+67,04413F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…76,516$1.61M<0.01%-2,64213F-HRTimeline
Dynamic Technology Lab Private Ltd76,540$1.58M0.35%+33,29513F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.76,280$1.58M<0.01%+49,21713F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND75,151$1.55M<0.01%-427,33613F-HRTimeline
BDF-GESTION676$1.52M0.2%-7613F-HRTimeline
Cascade Investment Advisors, Inc.72,340$1.5M0.82%new13F-HRTimeline
Police & Firemen's Retirement System of…71,268$1.47M0.01%+99113F-HRTimeline
Jupiter Topco LLCin group Janus Henderson69,400$1.43M<0.01%13F-HRTimelineGroup
Ridge Creek Global, Inc68,418$1.41M1.1%-2,13013F-HRTimeline
Louisiana State Employees Retirement Sy…67,500$1.4M0.02%-70013F-HR/ATimeline
Treasurer of the State of North Carolina64,959$1.34M<0.01%-3,20013F-HRTimeline
Caption Management, LLC64,000$1.32M0.05%+42,27813F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…61,033$1.26M<0.01%-9,20213F-HRTimelineGroup
Kerrisdale Advisers, LLC59,845$1.24M0.31%+30,65513F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd58,393$1.21M0.04%+2,89313F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.56,706$1.17M0.19%+22,76713F-HRTimeline
DELPHI MANAGEMENT INC /MA/55,469$1.15M1.12%+17,59613F-HRTimeline
Creative Planningin group Creative Planning54,404$1.12M<0.01%-10,37613F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …273,618$1.12M<0.01%+232,70113F-HRTimelineGroup
Advisors Asset Management, Inc.53,517$1.11M0.02%+3,48913F-HRTimeline
State of Tennessee, Department of Treas…53,132$1.1M<0.01%+6,87013F-HRTimeline
Crestwood Advisors Group, LLC53,002$1.1M0.02%-3,81513F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd52,938$1.09M0.01%+29,15113F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC51,942$1.07M0.01%013F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC50,740$1.05M<0.01%+91513F-HRTimeline
State of Alaska, Department of Revenue50,689$1.05M0.01%-25,17213F-HRTimeline
HAHN CAPITAL MANAGEMENT LLC49,705$1.03M0.62%-1,41513F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC49,420$1.02M<0.01%-12,18913F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC48,767$1.01M0.01%new13F-HRTimeline
WEXFORD CAPITAL LP47,870$989K0.14%+12,38413F-HRTimeline
Bridgewater Associates, LP47,223$976K<0.01%+30,17113F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…45,464$940K<0.01%-2,37813F-HRTimeline
Hikari Tsushin, Inc.45,403$938K0.06%013F-HRTimeline
AMALGAMATED BANK44,063$911K0.01%-14,28813F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM43,751$904K<0.01%+21013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC42,875$886K<0.01%+42613F-HRTimelineGroup
Paragon Capital Management LLC42,651$882K0.41%-50713F-HRTimeline
Entropy Technologies, LP42,286$874K0.03%+15,39113F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…40,963$847K<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP41,502$840K<0.01%+3,82613F-HRTimelineGroup
Lido Advisors, LLCin group Lido Advisors, LLC40,309$833K<0.01%-10,03613F-HRTimelineGroup
HARBOR CAPITAL ADVISORS, INC.39,501$816K0.06%new13F-HRTimeline
DBA TRADING, LLC31,196$814K0.41%013F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…37,772$781K0.01%013F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC37,746$780K0.01%-10613F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…36,500$754K<0.01%-1,50413F-HRTimeline
AXQ CAPITAL, LP35,915$742K0.08%new13F-HRTimeline
Wilmington Savings Fund Society, FSB35,425$732K0.02%+6,28713F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND35,000$723K0.01%-10013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC34,922$722K<0.01%-1,30713F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …33,813$699K<0.01%-82813F-HRTimelineGroup
CAPTRUST FINANCIAL ADVISORS33,730$697K<0.01%+1,80113F-HRTimeline
TOWER BRIDGE ADVISORS33,261$688K0.06%-2,43713F-HRTimeline
Lebenthal Global Advisors, LLCin group Lebenthal Global Advisors, LLC33,000$682K0.09%new13F-HRTimelineGroup
Old West Investment Management, LLC32,875$680K0.07%+11,10813F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC32,120$664K<0.01%+11,56913F-HRTimelineGroup
Clear Harbor Asset Management, LLC31,780$657K0.04%-1,99513F-HRTimeline
CITIGROUP INCin group CITIGROUP INC31,486$651K<0.01%-9,18513F-HRTimelineGroup
MARCO INVESTMENT MANAGEMENT LLC31,391$649K0.04%new13F-HRTimeline
Williams Jones Wealth Management, LLC.31,209$645K0.01%-1,30613F-HRTimeline
DOVER ADVISORS, LLC22,219$644K0.26%+1,05813F-HRTimeline
Blackstone Inc.in group Blackstone Inc.31,027$641K<0.01%new13F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
Steadtrust LLC30,400$628K0.32%-15,00013F-HRTimeline
Maryland State Retirement & Pension Sys…29,838$617K0.01%013F-HRTimeline
Legal Advantage Investments, Inc.28,900$597K0.21%013F-HRTimeline
GROUP ONE TRADING LLC27,710$573K0.02%new13F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP27,543$569K<0.01%-1,99013F-HR/ATimelineGroup
Jain Global LLC27,519$569K0.01%new13F-HRTimeline
BLAIR WILLIAM & CO/IL27,278$564K<0.01%-22,02013F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…26,893$556K<0.01%013F-HRTimelineGroup
National Philanthropic Trust26,844$555K0.01%-22213F-HRTimeline
Ameritas Advisory Services, LLCin group Ameritas Investment Partners,…26,747$553K0.01%new13F-HRTimelineGroup
SIT INVESTMENT ASSOCIATES INCin group SIT INVESTMENT ASSOCIATES INC26,202$542K0.01%013F-HRTimelineGroup
LEAVELL INVESTMENT MANAGEMENT, INC.24,660$510K0.02%+8,02313F-HRTimeline
Feynman Point Asset Management LLC24,075$498K0.91%new13F-HRTimeline
Peak Asset Management, LLC24,000$496K0.07%013F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC23,947$495K<0.01%+2,15313F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\22,681$469K<0.01%-1,59613F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC22,218$460K<0.01%new13F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC22,071$456K<0.01%+7,74113F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\21,821$451K<0.01%+1,96713F-HRTimelineGroup
Grantham, Mayo, Van Otterloo & Co. LLC21,601$446K<0.01%new13F-HRTimeline
NEVILLE RODIE & SHAW INC21,486$444K0.03%-32413F-HRTimeline