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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 464 | $4.34B |
| Q1 2026 | 486 | $5.28B |
| Q4 2025 | 483 | $5.64B |
| Q3 2025 | 462 | $4.63B |
| Q2 2025 | 461 | $4.73B |
| Q1 2025 | 418 | $3.49B |
| Q4 2024 | 451 | $3.48B |
| Q3 2024 | 492 | $3.23B |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2024
Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wolverine Trading, LLC | 71,103 | $1.59M | 0.04% | +71,103 | New |
| State of Wisconsin Investment Board | 74,623 | $1.57M | 0.00% | −35,634−32.3% | Reduced |
| CI Private Wealth, LLC | 72,783 | $1.53M | 0.00% | +36,778+102.1% | Added |
| Badgley Phelps Wealth Managers, LLC | 72,233 | $1.52M | 0.04% | −13,983−16.2% | Reduced |
| Arrowstreet Capital, Limited Partnership | 71,946 | $1.51M | 0.00% | +71,946 | New |
| CenterBook Partners LP | 71,306 | $1.50M | 0.09% | +71,306 | New |
| Advisors Asset Management, Inc. | 71,249 | $1.50M | 0.03% | −8,003−10.1% | Reduced |
| State of Alaska, Department of Revenue | 70,447 | $1.48M | 0.02% | +48,680+223.6% | Added |
| Janus Henderson Group PLC | 66,239 | $1.39M | 0.00% | −50,820−43.4% | Reduced |
| Winton Group Ltd | 64,748 | $1.36M | 0.09% | +64,748 | New |
| Price T Rowe Associates Inc | 62,126 | $1.31M | 0.00% | −112,432−64.4% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 61,268 | $1.29M | 0.09% | +53,898+731.3% | Added |
| Louisiana State Employees Retirement System | 60,000 | $1.26M | 0.02% | +53,000+757.1% | Added |
| Bank of Montreal | 59,741 | $1.26M | 0.00% | +59,741 | New |
| WSFS Capital Management, LLC | 59,474 | $1.25M | 0.07% | +15,387+34.9% | Added |
| TrinityPoint Wealth, LLC | 58,726 | $1.24M | 0.17% | +34,227+139.7% | Added |
| Treasurer of the State of North Carolina | 57,093 | $1.20M | 0.00% | +2,620+4.8% | Added |
| Algert Global LLC | 56,842 | $1.20M | 0.03% | +56,842 | New |
| Blair William & Co | 56,419 | $1.19M | 0.00% | +26,982+91.7% | Added |
| Paragon Capital Management LLC | 50,096 | $1.05M | 0.56% | −2,660−5.0% | Reduced |
| Teachers Retirement System of the State of Kentucky | 49,584 | $1.04M | 0.01% | −162,501−76.6% | Reduced |
| Toroso Investments, LLC | 49,457 | $1.04M | 0.01% | +25,630+107.6% | Added |
| Maryland State Retirement & Pension System | 48,908 | $1.03M | 0.02% | +41,787+586.8% | Added |
| Comerica Bank | 48,787 | $1.03M | 0.00% | +48,787 | New |
| Yousif Capital Management, LLC | 48,770 | $1.03M | 0.01% | +34,291+236.8% | Added |
| National Philanthropic Trust | 48,663 | $1.02M | 0.01% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 48,053 | $1.01M | 0.00% | −94,593−66.3% | Reduced |
| Rangeley Capital, LLC | 47,000 | $988.4K | 0.95% | +47,000 | New |
| Stifel Financial Corp | 46,934 | $987.1K | 0.00% | −18,384−28.1% | Reduced |
| Hilton Capital Management, LLC | 45,849 | $964.2K | 0.08% | +32,111+233.7% | Added |
| Strategic Advisors LLC | 45,705 | $961.2K | 0.17% | +30,560+201.8% | Added |
| Public Employees Retirement System of Ohio | 44,606 | $938.1K | 0.00% | +44,606 | New |
| Sumitomo Mitsui Trust Holdings, Inc. | 44,085 | $927.1K | 0.00% | +5,703+14.9% | Added |
| A. D. Beadell Investment Counsel, Inc. | 43,155 | $907.0K | 0.74% | +27,575+177.0% | Added |
| Hikari Tsushin, Inc. | 42,800 | $900.1K | 0.07% | +1,599+3.9% | Added |
| State of Tennessee, Treasury Department | 42,523 | $894.3K | 0.00% | −76,132−64.2% | Reduced |
| Victory Capital Management Inc | 42,319 | $890.0K | 0.00% | −169,831−80.1% | Reduced |
| Everett Harris & Co | 41,888 | $880.9K | 0.01% | −59,905−58.8% | Reduced |
| Williams Jones Wealth Management, LLC. | 41,045 | $863.2K | 0.01% | −182,758−81.7% | Reduced |
| Pine Valley Investments Ltd Liability Co | 39,560 | $831.9K | 0.05% | +18,567+88.4% | Added |
| Mariner, LLC | 38,884 | $817.7K | 0.00% | −26,019−40.1% | Reduced |
| Arizona State Retirement System | 38,835 | $816.7K | 0.00% | +2,961+8.3% | Added |
| Amalgamated Bank | 38,610 | $812.0K | 0.01% | +13,053+51.1% | Added |
| Granite Investment Partners, LLC | 38,333 | $806.1K | 0.03% | −2,538−6.2% | Reduced |
| Ensign Peak Advisors, Inc | 38,260 | $804.6K | 0.00% | −5,429−12.4% | Reduced |
| American Trust Investment Advisors, LLC | 37,854 | $796.1K | 0.33% | −560−1.5% | Reduced |
| Standard Life Aberdeen plc | 35,555 | $792.9K | 0.00% | +35,555 | New |
| Quantinno Capital Management LP | 37,315 | $784.7K | 0.01% | +10,022+36.7% | Added |
| Jones Financial Companies LLLP | 37,009 | $778.3K | 0.00% | +37,009 | New |
| Stephens Inc | 36,702 | $771.8K | 0.01% | −4,224−10.3% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 36,538 | $768.4K | 0.00% | −45,558−55.5% | Reduced |
| Marco Investment Management LLC | 35,975 | $756.6K | 0.07% | −2,310−6.0% | Reduced |
| Modera Wealth Management, LLC | 35,191 | $740.1K | 0.01% | −5,352−13.2% | Reduced |
| Nisa Investment Advisors, LLC | 34,999 | $736.0K | 0.00% | −788−2.2% | Reduced |
| Country Club Bank | 32,594 | $726.8K | 0.05% | +32,594 | New |
| Walleye Trading LLC | 32,772 | $689.2K | 0.01% | +32,772 | New |
| Commonwealth Equity Services, LLC | 32,580 | $685.0K | 0.00% | −47,218−59.2% | Reduced |
| Bryn Mawr Trust Co | 32,259 | $678.4K | 0.01% | +7,769+31.7% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 32,165 | $676.4K | 0.00% | +32,165 | New |
| ProShare Advisors LLC | 31,054 | $653.1K | 0.00% | +13,932+81.4% | Added |
| Berger Financial Group, Inc | 30,158 | $634.2K | 0.04% | −4,762−13.6% | Reduced |
| Weiss Asset Management LP | 30,031 | $631.6K | 0.01% | +30,031 | New |
| Murchinson Ltd. | 30,000 | $630.9K | 0.28% | +30,000 | New |
| The PNC Financial Services Group, Inc. | 29,748 | $625.6K | 0.00% | −13,574−31.3% | Reduced |
| Clifford Swan Investment Counsel LLC | 29,430 | $618.9K | 0.02% | −26,120−47.0% | Reduced |
| Oregon Public Employees Retirement Fund | 29,200 | $614.1K | 0.01% | +18,450+171.6% | Added |
| Westwood Holdings Group Inc. | 28,890 | $607.6K | 0.00% | +18,183+169.8% | Added |
| Truist Financial Corp | 28,358 | $596.4K | 0.00% | −25,842−47.7% | Reduced |
| Investment Management Corp of Ontario | 28,214 | $593.3K | 0.02% | +1,158+4.3% | Added |
| US Bancorp | 27,942 | $587.6K | 0.00% | +27,002+2,872.6% | Added |
| Jane Street Group, LLC | 27,490 | $578.1K | 0.00% | −29,657−51.9% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 26,490 | $557.1K | 0.00% | −768−2.8% | Reduced |
| Captrust Financial Advisors | 25,856 | $543.8K | 0.00% | +1,445+5.9% | Added |
| Alpine Global Management, LLC | 25,000 | $525.8K | 0.15% | +25,000 | New |
| Baker Avenue Asset Management, LP | 24,740 | $520.3K | 0.02% | +24,740 | New |
| Sit Investment Associates Inc | 24,700 | $519.0K | 0.01% | 00.0% | Unchanged |
| Forte Capital LLC | 24,234 | $509.6K | 0.06% | −43,578−64.3% | Reduced |
| Wesbanco Bank Inc | 24,050 | $505.8K | 0.02% | −9,846−29.0% | Reduced |
| Peak Asset Management, LLC | 24,000 | $504.7K | 0.09% | 00.0% | Unchanged |
| Quest Partners LLC | 23,780 | $500.1K | 0.07% | −534−2.2% | Reduced |
| Security National Bank of So Dak | 23,299 | $490.0K | 0.27% | +23,299 | New |
| Natixis Advisors, L.P. | 23,172 | $487.0K | 0.00% | −177,493−88.5% | Reduced |
| Royce & Associates LP | 22,500 | $473.2K | 0.00% | 00.0% | Unchanged |
| Neuberger Berman Group LLC | 21,321 | $448.4K | 0.00% | −869,153−97.6% | Reduced |
| Utah Retirement Systems | 20,585 | $432.9K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 19,979 | $420.2K | 0.00% | +7,797+64.0% | Added |
| Creative Planning | 19,781 | $416.0K | 0.00% | −11,488−36.7% | Reduced |
| Pictet Asset Management Holding SA | 19,758 | $415.5K | 0.00% | −29,908−60.2% | Reduced |
| Hyperion Capital Advisors LP | 19,563 | $411.4K | 0.21% | +19,563 | New |
| Foundations Investment Advisors, LLC | 19,458 | $409.2K | 0.01% | +19,458 | New |
| Squarepoint Ops LLC | 18,989 | $399.3K | 0.00% | −20,346−51.7% | Reduced |
| Phoenix Holdings Ltd. | 18,932 | $398.1K | 0.01% | +18,932 | New |
| Police & Firemen's Retirement System of New Jersey | 18,866 | $396.8K | 0.00% | +18,866 | New |
| Mutual of America Capital Management LLC | 18,796 | $395.3K | 0.00% | +18,796 | New |
| QRG Capital Management, Inc. | 18,678 | $392.8K | 0.00% | −23,095−55.3% | Reduced |
| Evergreen Capital Management LLC | 18,605 | $391.3K | 0.01% | −46,725−71.5% | Reduced |
| Kirtland Hills Capital Management, LLC | 18,542 | $389.9K | 0.25% | 00.0% | Unchanged |
| Toth Financial Advisory Corp | 18,194 | $382.6K | 0.05% | −30,762−62.8% | Reduced |
| Highland Capital Management Fund Advisors, L.P. | 17,995 | $378.4K | 0.04% | +8,655+92.7% | Added |
| Keeley-Teton Advisors, LLC | 17,757 | $373.4K | 0.04% | +17,757 | New |