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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
Picton Mahoney Asset Management8$00.00%−2,598−99.7%Reduced
Principia Wealth Advisory, LLC1$210.00%+1New
TFC Financial Management1$220.00%00.0%Unchanged
First Horizon Advisors, Inc.2$420.00%−239−99.2%Reduced
DiNuzzo Private Wealth, Inc.2$430.00%−8−80.0%Reduced
Winnow Wealth LLC3$490.00%+3New
SOA Wealth Advisors, LLC.3$630.00%+3New
Sierra Ocean, LLC3$630.00%+3New
Kayne Anderson Rudnick Investment Management LLC4$840.00%00.0%Unchanged
Logan Capital Management Inc5$1050.00%+5New
Cassady Schiller Wealth Management, LLC5$1050.00%+5New
Carolinas Wealth Consulting LLC5$1060.00%−5−50.0%Reduced
St Germain D J Co Inc6$1260.00%00.0%Unchanged
SJS Investment Consulting Inc.6$1270.00%−9−60.0%Reduced
Zions Bancorporation, N.A.7$1470.00%00.0%Unchanged
MV Capital Management, Inc.7$1480.00%−10−58.8%Reduced
UMA Financial Services, Inc.7$1480.00%+7New
Hexagon Capital Partners LLC11$2310.00%+11New
WR Wealth Planners, LLC11$2310.00%+11New
Private Wealth Management Group, LLC12$2530.00%−19−61.3%Reduced
Grove Bank & Trust13$2730.00%+13New
Eagle Bay Advisors LLC14$2940.00%−49−77.8%Reduced
Prestige Wealth Management Group LLC14$2950.00%00.0%Unchanged
Redwood Park Advisors LLC14$2950.00%+14New
Cornerstone Planning Group LLC14$3010.00%00.0%Unchanged
Cullen/Frost Bankers, Inc.15$3050.00%−76,917−100.0%Reduced
Park Place Capital Corp15$3150.00%+15New
TD Capital Management LLC17$3580.00%+17New
New Millennium Group LLC18$3790.00%00.0%Unchanged
Whipplewood Advisors, LLC21$4420.00%+21New
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
Sachetta, LLC23$4840.00%−15−39.5%Reduced
Financial Gravity Companies, Inc.23$4840.00%+23New
Harbour Investments, Inc.28$5890.00%00.0%Unchanged
Dunhill Financial, LLC29$6100.00%+6+26.1%Added
Bruce G. Allen Investments, LLC30$6310.00%+30New
JFS Wealth Advisors, LLC31$6520.00%−67−68.4%Reduced
Creative Financial Designs Inc32$6730.00%+32New
Sunbelt Securities, Inc.32$7140.00%00.0%Unchanged
Bell Investment Advisors, Inc34$7160.00%−6−15.0%Reduced
Principal Securities, Inc.38$7990.00%−1,714−97.8%Reduced
1620 Investment Advisors, Inc.46$9670.00%00.0%Unchanged
Wood Tarver Financial Group, LLC75$1.00K0.00%+75New
Venturi Wealth Management, LLC48$1.01K0.00%−67−58.3%Reduced
Synergy Investment Management, LLC49$1.03K0.00%+49New
Towarzystwo Funduszy Inwestycyjnych Pzu SA50$1.05K0.00%00.0%Unchanged
Archer Investment Corp50$1.06K0.00%00.0%Unchanged
High Note Wealth, LLC60$1.26K0.00%+60New
Oarsman Capital, Inc.61$1.28K0.00%−276−81.9%Reduced
Ancora Advisors, LLC65$1.37K0.00%−25,350−99.7%Reduced
Caitong International Asset Management Co., Ltd67$1.41K0.00%+67New
Rothschild Investment LLC75$1.58K0.00%−8,435−99.1%Reduced
Minot DeBlois Advisors LLC75$1.58K0.00%+75New
Cherry Tree Wealth Management, LLC75$1.58K0.00%00.0%Unchanged
First Financial Corp79$1.66K0.00%+79New
Asset Dedication, LLC80$1.68K0.00%−160−66.7%Reduced
PFG Private Wealth Management, LLC83$1.75K0.00%−931−91.8%Reduced
Geneos Wealth Management Inc.91$1.91K0.00%+91New
Versant Capital Management, Inc93$1.96K0.00%+93New
Rosenberg Matthew Hamilton94$1.98K0.00%00.0%Unchanged
Capital Analysts, LLC77$2.00K0.00%−1,024−93.0%Reduced
Householder Group Estate & Retirement Specialist, LLC113$2.00K0.00%−289−71.9%Reduced
Hemington Wealth Management131$2.00K0.00%−36−21.6%Reduced
Godsey & Gibb Associates100$2.10K0.00%00.0%Unchanged
Harbor Investment Advisory, LLC100$2.10K0.00%+100New
Kozak & Associates, Inc.99$2.23K0.00%00.0%Unchanged
Assetmark, Inc108$2.27K0.00%−126−53.8%Reduced
Brown, Lisle/Cummings, Inc.110$2.31K0.00%00.0%Unchanged
Larson Financial Group LLC119$2.50K0.00%−41−25.6%Reduced
Missouri Trust & Investment Co120$2.52K0.00%+120New
Quadrant Capital Group LLC124$2.61K0.00%−34−21.5%Reduced
Union Savings Bank125$2.63K0.00%+125New
SBI Securities Co., Ltd.127$2.67K0.00%+127New
Roxbury Financial LLC112$2.73K0.00%+112New
McIlrath & Eck, LLC130$2.73K0.00%00.0%Unchanged
Coppell Advisory Solutions LLC123$2.74K0.00%+123New
GPS Wealth Strategies Group, LLC138$2.90K0.00%00.0%Unchanged
GeoWealth Management, LLC140$2.94K0.00%−1,099−88.7%Reduced
AlphaMark Advisors, LLC125$3.00K0.00%00.0%Unchanged
Lindbrook Capital, LLC143$3.01K0.00%−38−21.0%Reduced
Medallion Wealth Advisors, LLC170$3.09K0.00%+170New
Community Bank, N.A.150$3.15K0.00%+150New
Golden State Wealth Management, LLC158$3.32K0.00%+158New
Richards, Merrill & Peterson, Inc.170$3.58K0.00%+170New
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.161$3.63K0.00%−187,814−99.9%Reduced
Continuum Advisory, LLC180$3.79K0.00%−2−1.1%Reduced
Longview Financial Advisors LLC187$3.93K0.00%+187New
Old Second National Bank of Aurora200$4.21K0.00%00.0%Unchanged
Perkins Coie Trust Co207$4.35K0.00%+207New
Financial Management Professionals, Inc.215$4.52K0.00%00.0%Unchanged
DT Investment Partners, LLC218$4.58K0.00%00.0%Unchanged
Nelson, Van Denburg & Campbell Wealth Management Group, LLC236$4.96K0.00%−4−1.7%Reduced
Farmers & Merchants Investments Inc239$5.03K0.00%00.0%Unchanged
Mather Group, LLC.256$5.38K0.00%−14−5.2%Reduced
Gen-Wealth Partners Inc256$5.38K0.00%00.0%Unchanged
Oakworth Capital, Inc.257$5.41K0.00%00.0%Unchanged
Deseret Mutual Benefit Administrators260$5.47K0.00%+260New
Parkside Financial Bank & Trust274$5.76K0.00%−7−2.5%Reduced