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Amentum Holdings, Inc.

AMTM
Exchange
NYSE
Industry
Services-Business Services, NEC
SEC CIK
0002011286

No open-market purchases or sales by Amentum Holdings, Inc. insiders were filed in the last 90 days; 464 institutions reported holding it in 13F filings for Q2 2026, worth $4.34B in total; Soros Fund Management is the only superinvestor holding it.

13F holders, Q4 2024

Institutional positions in Amentum Holdings, Inc. as of Dec 31, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
451
−38 vs. Q3 2024
Shares held
165.3M
+64.8M (+64.4%) vs. Q3 2024
Total value
$3.48B
+$250.9M (+7.8%) vs. Q3 2024
New holders
145
94 more added
Sold out
183
158 more reduced

3 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2024: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting AMTM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2024: 451 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 0 institutionsQ4 2021: 0 institutionsQ1 2022: 0 institutionsQ2 2022: 0 institutionsQ3 2022: 0 institutionsQ4 2022: 0 institutionsQ1 2023: 0 institutionsQ2 2023: 0 institutionsQ3 2023: 0 institutionsQ4 2023: 0 institutionsQ1 2024: 0 institutionsQ2 2024: 0 institutionsQ3 2024: 492 institutionsQ4 2024: 451 institutionsQ1 2025: 418 institutionsQ2 2025: 461 institutionsQ3 2025: 462 institutionsQ4 2025: 483 institutionsQ1 2026: 486 institutionsQ2 2026: 464 institutions
Value heldQ4 2024: $3.48B
Q1 2021: $0Q2 2021: $0Q3 2021: $0Q4 2021: $0Q1 2022: $0Q2 2022: $0Q3 2022: $0Q4 2022: $0Q1 2023: $0Q2 2023: $0Q3 2023: $0Q4 2023: $0Q1 2024: $0Q2 2024: $0Q3 2024: $3.23BQ4 2024: $3.48BQ1 2025: $3.49BQ2 2025: $4.73BQ3 2025: $4.63BQ4 2025: $5.64BQ1 2026: $5.28BQ2 2026: $4.34B
Institutions holding AMTM and their total value by quarter
QuarterHoldersValue
Q2 2026464$4.34B
Q1 2026486$5.28B
Q4 2025483$5.64B
Q3 2025462$4.63B
Q2 2025461$4.73B
Q1 2025418$3.49B
Q4 2024451$3.48B
Q3 2024492$3.23B
Q2 20240$0
Q1 20240$0
Q4 20230$0
Q3 20230$0
Q2 20230$0
Q1 20230$0
Q4 20220$0
Q3 20220$0
Q2 20220$0
Q1 20220$0
Q4 20210$0
Q3 20210$0
Q2 20210$0
Q1 20210$0

Institutions, Q4 2024

Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q3 2024.

Institutions holding AMTM in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Oarsman Capital, Inc.61$1.28K0.00%−276−81.9%Reduced
High Note Wealth, LLC60$1.26K0.00%+60New
Archer Investment Corp50$1.06K0.00%00.0%Unchanged
Towarzystwo Funduszy Inwestycyjnych Pzu SA50$1.05K0.00%00.0%Unchanged
Synergy Investment Management, LLC49$1.03K0.00%+49New
Venturi Wealth Management, LLC48$1.01K0.00%−67−58.3%Reduced
Wood Tarver Financial Group, LLC75$1.00K0.00%+75New
1620 Investment Advisors, Inc.46$9670.00%00.0%Unchanged
Principal Securities, Inc.38$7990.00%−1,714−97.8%Reduced
Bell Investment Advisors, Inc34$7160.00%−6−15.0%Reduced
Sunbelt Securities, Inc.32$7140.00%00.0%Unchanged
Creative Financial Designs Inc32$6730.00%+32New
JFS Wealth Advisors, LLC31$6520.00%−67−68.4%Reduced
Bruce G. Allen Investments, LLC30$6310.00%+30New
Dunhill Financial, LLC29$6100.00%+6+26.1%Added
Harbour Investments, Inc.28$5890.00%00.0%Unchanged
Sachetta, LLC23$4840.00%−15−39.5%Reduced
Financial Gravity Companies, Inc.23$4840.00%+23New
AdvisorNet Financial, Inc22$4630.00%−3−12.0%Reduced
Leonteq Securities AG22$4630.00%00.0%Unchanged
Red Tortoise LLC22$4630.00%00.0%Unchanged
Whipplewood Advisors, LLC21$4420.00%+21New
New Millennium Group LLC18$3790.00%00.0%Unchanged
TD Capital Management LLC17$3580.00%+17New
Park Place Capital Corp15$3150.00%+15New
Cullen/Frost Bankers, Inc.15$3050.00%−76,917−100.0%Reduced
Cornerstone Planning Group LLC14$3010.00%00.0%Unchanged
Prestige Wealth Management Group LLC14$2950.00%00.0%Unchanged
Redwood Park Advisors LLC14$2950.00%+14New
Eagle Bay Advisors LLC14$2940.00%−49−77.8%Reduced
Grove Bank & Trust13$2730.00%+13New
Private Wealth Management Group, LLC12$2530.00%−19−61.3%Reduced
Hexagon Capital Partners LLC11$2310.00%+11New
WR Wealth Planners, LLC11$2310.00%+11New
MV Capital Management, Inc.7$1480.00%−10−58.8%Reduced
UMA Financial Services, Inc.7$1480.00%+7New
Zions Bancorporation, N.A.7$1470.00%00.0%Unchanged
SJS Investment Consulting Inc.6$1270.00%−9−60.0%Reduced
St Germain D J Co Inc6$1260.00%00.0%Unchanged
Carolinas Wealth Consulting LLC5$1060.00%−5−50.0%Reduced
Logan Capital Management Inc5$1050.00%+5New
Cassady Schiller Wealth Management, LLC5$1050.00%+5New
Kayne Anderson Rudnick Investment Management LLC4$840.00%00.0%Unchanged
SOA Wealth Advisors, LLC.3$630.00%+3New
Sierra Ocean, LLC3$630.00%+3New
Winnow Wealth LLC3$490.00%+3New
DiNuzzo Private Wealth, Inc.2$430.00%−8−80.0%Reduced
First Horizon Advisors, Inc.2$420.00%−239−99.2%Reduced
TFC Financial Management1$220.00%00.0%Unchanged
Principia Wealth Advisory, LLC1$210.00%+1New
Picton Mahoney Asset Management8$00.00%−2,598−99.7%Reduced
Barrow Hanley Mewhinney & Strauss LLC0$00.00%−3,225,967−100.0%Sold out
Boston Partners0$00.00%−2,983,146−100.0%Sold out
Ninety One UK Ltd0$00.00%−1,538,931−100.0%Sold out
Massachusetts Financial Services Co0$00.00%−1,228,298−100.0%Sold out
Simcoe Capital Management, LLC0$00.00%−1,153,105−100.0%Sold out
Caisse de Depot Et Placement du Quebec0$00.00%−718,039−100.0%Sold out
First Trust Advisors LP0$00.00%−514,562−100.0%Sold out
Agf Management Ltd0$00.00%−365,376−100.0%Sold out
Sessa Capital IM, L.P.0$00.00%−354,699−100.0%Sold out
Madison Avenue Partners, LP0$00.00%−383,218−100.0%Sold out
Two Sigma Investments, LP0$00.00%−321,096−100.0%Sold out
Todd Asset Management LLC0$00.00%−307,663−100.0%Sold out
American Century Companies Inc0$00.00%−287,886−100.0%Sold out
Waters Parkerson & Co., LLC0$00.00%−203,578−100.0%Sold out
Korea Investment CORP0$00.00%−197,972−100.0%Sold out
Campbell Newman Asset Management Inc0$00.00%−193,208−100.0%Sold out
Two Sigma Advisers, LP0$00.00%−184,900−100.0%Sold out
Fort Baker Capital Management LP0$00.00%−167,490−100.0%Sold out
Lazard Asset Management LLC0$00.00%−204,047−100.0%Sold out
Adage Capital Partners GP, L.L.C.0$00.00%−118,027−100.0%Sold out
La Banque Postale Asset Management SA0$00.00%−115,535−100.0%Sold out
F/M Investments LLC0$00.00%−109,887−100.0%Sold out
Mackenzie Financial Corp0$00.00%−104,687−100.0%Sold out
Wedge Capital Management L L P0$00.00%−83,542−100.0%Sold out
Panagora Asset Management Inc0$00.00%−81,538−100.0%Sold out
Manufacturers Life Insurance Company, The0$00.00%−79,030−100.0%Sold out
Asset Management One Co.,Ltd.0$00.00%−76,777−100.0%Sold out
ZWJ Investment Counsel Inc0$00.00%−69,967−100.0%Sold out
Balyasny Asset Management LLC0$00.00%−69,249−100.0%Sold out
Janney Montgomery Scott LLC0$00.00%−67,549−100.0%Sold out
Chevy Chase Trust Holdings, Inc.0$00.00%−67,201−100.0%Sold out
Wharton Business Group, LLC0$00.00%−65,295−100.0%Sold out
Greenwood Gearhart Inc0$00.00%−60,733−100.0%Sold out
Carmel Capital Management L.L.C.0$00.00%−58,833−100.0%Sold out
Cubist Systematic Strategies, LLC0$00.00%−58,116−100.0%Sold out
Royal London Asset Management Ltd0$00.00%−55,672−100.0%Sold out
Bancreek Capital Management, LP0$00.00%−55,288−100.0%Sold out
McKinley Carter Wealth Services, Inc.0$00.00%−54,707−100.0%Sold out
Bridgewater Associates, LP0$00.00%−48,532−100.0%Sold out
Robeco Institutional Asset Management B.V.0$00.00%−41,443−100.0%Sold out
Scopus Asset Management, L.P.0$00.00%−37,282−100.0%Sold out
AXA S.A.0$00.00%−36,585−100.0%Sold out
Qube Research & Technologies Ltd0$00.00%−35,958−100.0%Sold out
Daiwa Securities Group Inc.0$00.00%−35,390−100.0%Sold out
Malaga Cove Capital, LLC0$00.00%−35,006−100.0%Sold out
State of Michigan Retirement System0$00.00%−34,099−100.0%Sold out
Resona Asset Management Co.,Ltd.0$00.00%−33,376−100.0%Sold out
Oppenheimer Asset Management Inc.0$00.00%−32,927−100.0%Sold out
Louisbourg Investments Inc.0$00.00%−38,368−100.0%Sold out