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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
Spire Wealth Management1,039$21.9K0.00%+1,039New
Whittier Trust Co of Nevada Inc1,023$21.5K0.00%+1,023New
Thurston, Springer, Miller, Herd & Titak, Inc.1,011$21.3K0.00%+145+16.7%Added
Mechanics Financial Corp972$20.4K0.01%+972New
Federated Hermes, Inc.949$20.0K0.00%−49,884−98.1%Reduced
Studio Investment Management LLC948$19.9K0.00%−366−27.9%Reduced
Anchor Investment Management, LLC925$19.5K0.00%−68−6.8%Reduced
Glen Eagle Advisors, LLC915$19.2K0.00%−168−15.5%Reduced
R Squared Ltd900$18.9K0.02%+900New
Crews Bank & Trust852$17.9K0.00%+852New
SRS Capital Advisors, Inc.849$17.9K0.00%−29−3.3%Reduced
Signaturefd, LLC848$17.8K0.00%−165−16.3%Reduced
Menard Financial Group LLC798$16.8K0.01%+798New
Tower Research Capital LLC (TRC)790$16.6K0.00%−3,933−83.3%Reduced
Quent Capital, LLC789$16.6K0.00%+789New
Vista Private Wealth Partners. LLC750$15.8K0.01%00.0%Unchanged
Mendota Financial Group, LLC731$15.4K0.01%−18−2.4%Reduced
Ramirez Asset Management, Inc.700$14.7K0.00%00.0%Unchanged
Bartlett & Co. Wealth Management LLC682$14.3K0.00%00.0%Unchanged
GWM Advisors LLC667$14.0K0.00%+509+322.2%Added
First Command Advisory Services, Inc.656$13.8K0.00%+656New
Nomura Asset Management Co Ltd650$13.7K0.00%−1,736−72.8%Reduced
North Star Investment Management Corp.650$13.7K0.00%00.0%Unchanged
Private Trust Co NA628$13.2K0.00%+628New
TD Waterhouse Canada Inc.603$12.7K0.00%+603New
Evermay Wealth Management LLC600$12.6K0.00%−1,380−69.7%Reduced
Natixis578$12.2K0.00%+578New
Evolution Advisers, Inc.600$12.0K0.01%00.0%Unchanged
Winch Advisory Services, LLC540$11.4K0.00%00.0%Unchanged
Clearstead Advisors, LLC535$11.3K0.00%−5,802−91.6%Reduced
Proequities, Inc.471$10.9K0.00%−1,068−69.4%Reduced
Optimum Investment Advisors501$10.5K0.00%00.0%Unchanged
Ransom Advisory, Ltd500$10.5K0.00%00.0%Unchanged
FNY Investment Advisers, LLC500$10.0K0.01%+500New
Global Wealth Strategies & Associates465$9.78K0.00%+465New
BankPlus Trust Department464$9.76K0.00%+464New
Smartleaf Asset Management LLC425$9.48K0.00%+425New
CoreCap Advisors, LLC439$9.23K0.00%+439New
Wingate Wealth Advisors, Inc.434$9.13K0.01%+434New
Ronald Blue Trust, Inc.432$9.09K0.00%+432New
Parvin Asset Management, LLC431$9.06K0.01%+431New
Covestor Ltd406$9.00K0.01%+76+23.0%Added
Beacon Capital Management, LLC424$8.92K0.00%00.0%Unchanged
Transce3nd, LLC396$8.33K0.00%+396New
Atlas Capital Advisors LLC370$7.78K0.00%−463−55.6%Reduced
Massmutual Trust Co FSB363$7.63K0.00%−17,467−98.0%Reduced
Murphy & Mullick Capital Management Corp352$7.40K0.01%+352New
LRI Investments, LLC313$6.58K0.00%00.0%Unchanged
TD Private Client Wealth LLC304$6.39K0.00%−5,274−94.6%Reduced
Cromwell Holdings LLC291$6.12K0.00%−32−9.9%Reduced
Hanson & Doremus Investment Management303$6.00K0.00%00.0%Unchanged
Parkside Financial Bank & Trust274$5.76K0.00%−7−2.5%Reduced
Deseret Mutual Benefit Administrators260$5.47K0.00%+260New
Oakworth Capital, Inc.257$5.41K0.00%00.0%Unchanged
Mather Group, LLC.256$5.38K0.00%−14−5.2%Reduced
Gen-Wealth Partners Inc256$5.38K0.00%00.0%Unchanged
Farmers & Merchants Investments Inc239$5.03K0.00%00.0%Unchanged
Nelson, Van Denburg & Campbell Wealth Management Group, LLC236$4.96K0.00%−4−1.7%Reduced
DT Investment Partners, LLC218$4.58K0.00%00.0%Unchanged
Financial Management Professionals, Inc.215$4.52K0.00%00.0%Unchanged
Perkins Coie Trust Co207$4.35K0.00%+207New
Old Second National Bank of Aurora200$4.21K0.00%00.0%Unchanged
Longview Financial Advisors LLC187$3.93K0.00%+187New
Continuum Advisory, LLC180$3.79K0.00%−2−1.1%Reduced
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.161$3.63K0.00%−187,814−99.9%Reduced
Richards, Merrill & Peterson, Inc.170$3.58K0.00%+170New
Golden State Wealth Management, LLC158$3.32K0.00%+158New
Community Bank, N.A.150$3.15K0.00%+150New
Medallion Wealth Advisors, LLC170$3.09K0.00%+170New
Lindbrook Capital, LLC143$3.01K0.00%−38−21.0%Reduced
AlphaMark Advisors, LLC125$3.00K0.00%00.0%Unchanged
GeoWealth Management, LLC140$2.94K0.00%−1,099−88.7%Reduced
GPS Wealth Strategies Group, LLC138$2.90K0.00%00.0%Unchanged
Coppell Advisory Solutions LLC123$2.74K0.00%+123New
McIlrath & Eck, LLC130$2.73K0.00%00.0%Unchanged
Roxbury Financial LLC112$2.73K0.00%+112New
SBI Securities Co., Ltd.127$2.67K0.00%+127New
Union Savings Bank125$2.63K0.00%+125New
Quadrant Capital Group LLC124$2.61K0.00%−34−21.5%Reduced
Missouri Trust & Investment Co120$2.52K0.00%+120New
Larson Financial Group LLC119$2.50K0.00%−41−25.6%Reduced
Brown, Lisle/Cummings, Inc.110$2.31K0.00%00.0%Unchanged
Assetmark, Inc108$2.27K0.00%−126−53.8%Reduced
Kozak & Associates, Inc.99$2.23K0.00%00.0%Unchanged
Godsey & Gibb Associates100$2.10K0.00%00.0%Unchanged
Harbor Investment Advisory, LLC100$2.10K0.00%+100New
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
Rosenberg Matthew Hamilton94$1.98K0.00%00.0%Unchanged
Versant Capital Management, Inc93$1.96K0.00%+93New
Geneos Wealth Management Inc.91$1.91K0.00%+91New
PFG Private Wealth Management, LLC83$1.75K0.00%−931−91.8%Reduced
Asset Dedication, LLC80$1.68K0.00%−160−66.7%Reduced
First Financial Corp79$1.66K0.00%+79New
Cherry Tree Wealth Management, LLC75$1.58K0.00%00.0%Unchanged
Rothschild Investment LLC75$1.58K0.00%−8,435−99.1%Reduced
Minot DeBlois Advisors LLC75$1.58K0.00%+75New
Caitong International Asset Management Co., Ltd67$1.41K0.00%+67New
Ancora Advisors, LLC65$1.37K0.00%−25,350−99.7%Reduced