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, Q2 2025
Institutional positions in Amentum Holdings, Inc. as of Jun 30, 2025. 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
- 461
- +48 vs. Q1 2025
- Shares held
- 200.3M
- +8.87M (+4.6%) vs. Q1 2025
- Total value
- $4.73B
- +$1.25B (+35.7%) vs. Q1 2025
- New holders
- 113
- 233 more added
- Sold out
- 65
- 100 more reduced
5 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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, Q2 2025
Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Treasurer of the State of North Carolina | 74,368 | $1.76M | 0.01% | +6,585+9.7% | Added |
| WSFS Capital Management, LLC | 72,728 | $1.72M | 0.09% | +10,356+16.6% | Added |
| Louisiana State Employees Retirement System | 70,500 | $1.66M | 0.03% | +12,100+20.7% | Added |
| Janus Henderson Group PLC | 69,400 | $1.64M | 0.00% | −61,600−47.0% | Reduced |
| Hahn Capital Management LLC | 68,748 | $1.62M | 0.77% | +3,115+4.7% | Added |
| Wolverine Asset Management LLC | 68,040 | $1.61M | 0.03% | +34,800+104.7% | Added |
| Group One Trading, L.P. | 67,908 | $1.60M | 0.05% | −36,776−35.1% | Reduced |
| Natixis Advisors, L.P. | 67,077 | $1.58M | 0.00% | +10,219+18.0% | Added |
| Teacher Retirement System of Texas | 64,845 | $1.53M | 0.01% | +675+1.1% | Added |
| XTX Topco Ltd | 64,723 | $1.53M | 0.06% | +64,723 | New |
| State of Tennessee, Treasury Department | 62,654 | $1.48M | 0.01% | −12,914−17.1% | Reduced |
| Versor Investments LP | 62,022 | $1.46M | 0.26% | +22,622+57.4% | Added |
| Wellington Management Group LLP | 60,778 | $1.43M | 0.00% | +60,778 | New |
| Coastal Bridge Advisors, LLC | 60,413 | $1.43M | 0.12% | +60,413 | New |
| Police & Firemen's Retirement System of New Jersey | 60,391 | $1.43M | 0.01% | +37,269+161.2% | Added |
| Neuberger Berman Group LLC | 58,800 | $1.39M | 0.00% | +42,647+264.0% | Added |
| Yousif Capital Management, LLC | 56,966 | $1.34M | 0.01% | +10,526+22.7% | Added |
| Blair William & Co | 56,568 | $1.34M | 0.00% | +2,368+4.4% | Added |
| Maryland State Retirement & Pension System | 51,806 | $1.22M | 0.03% | +2,784+5.7% | Added |
| Quantinno Capital Management LP | 51,543 | $1.22M | 0.01% | +10,333+25.1% | Added |
| Hyperion Capital Advisors LP | 51,487 | $1.22M | 0.76% | +32,901+177.0% | Added |
| Teachers Retirement System of the State of Kentucky | 51,336 | $1.21M | 0.01% | −4,480−8.0% | Reduced |
| Public Employees Retirement System of Ohio | 51,304 | $1.21M | 0.00% | +3,688+7.7% | Added |
| Marex Group plc | 50,000 | $1.18M | 0.02% | +50,000 | New |
| Barclays PLC | 49,239 | $1.16M | 0.00% | −6,265−11.3% | Reduced |
| Paragon Capital Management LLC | 48,710 | $1.15M | 0.59% | +638+1.3% | Added |
| CI Private Wealth, LLC | 48,384 | $1.14M | 0.00% | +5,148+11.9% | Added |
| Williams Jones Wealth Management, LLC. | 47,660 | $1.13M | 0.01% | +9,550+25.1% | Added |
| Susquehanna International Group, LLP | 46,707 | $1.10M | 0.00% | −486,860−91.2% | Reduced |
| Arizona State Retirement System | 46,153 | $1.09M | 0.01% | +7,768+20.2% | Added |
| Amalgamated Bank | 45,835 | $1.08M | 0.01% | +2,469+5.7% | Added |
| Hikari Tsushin, Inc. | 45,403 | $1.07M | 0.08% | +2,603+6.1% | Added |
| Advisors Asset Management, Inc. | 45,183 | $1.07M | 0.02% | −11,419−20.2% | Reduced |
| Cerity Partners LLC | 45,116 | $1.07M | 0.00% | +6,312+16.3% | Added |
| Pine Valley Investments Ltd Liability Co | 44,618 | $1.05M | 0.06% | +4,798+12.0% | Added |
| Mariner, LLC | 42,989 | $1.01M | 0.00% | +11,260+35.5% | Added |
| Bank of Montreal | 40,669 | $960.2K | 0.00% | +5,210+14.7% | Added |
| Ensign Peak Advisors, Inc | 40,586 | $958.2K | 0.00% | +2,326+6.1% | Added |
| Wells Fargo & Company | 40,206 | $949.3K | 0.00% | −10,246−20.3% | Reduced |
| Clear Harbor Asset Management, LLC | 40,053 | $945.7K | 0.07% | −490−1.2% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 38,732 | $914.5K | 0.00% | +4,380+12.8% | Added |
| Fortress Investment Group LLC | 38,106 | $899.7K | 0.13% | +31,819+506.1% | Added |
| Colony Group, LLC | 36,934 | $872.0K | 0.00% | +13,175+55.5% | Added |
| Manufacturers Life Insurance Company, The | 36,363 | $858.5K | 0.00% | −1,157−3.1% | Reduced |
| Tower Bridge Advisors | 36,058 | $851.3K | 0.09% | −2,830−7.3% | Reduced |
| Highland Capital Management Fund Advisors, L.P. | 35,263 | $832.6K | 0.08% | −8,637−19.7% | Reduced |
| Oregon Public Employees Retirement Fund | 34,400 | $812.2K | 0.01% | +1,600+4.9% | Added |
| Creative Planning | 34,301 | $809.9K | 0.00% | +15,114+78.8% | Added |
| National Philanthropic Trust | 33,827 | $798.7K | 0.01% | +806+2.4% | Added |
| Victory Capital Management Inc | 33,708 | $795.8K | 0.00% | +3,849+12.9% | Added |
| Nisa Investment Advisors, LLC | 33,630 | $794.0K | 0.00% | +3,143+10.3% | Added |
| American Trust Investment Advisors, LLC | 33,252 | $785.1K | 0.40% | −2,436−6.8% | Reduced |
| Stifel Financial Corp | 33,005 | $779.3K | 0.00% | +19,767+149.3% | Added |
| Captrust Financial Advisors | 30,815 | $727.5K | 0.00% | +10,200+49.5% | Added |
| Jones Financial Companies LLLP | 30,156 | $708.0K | 0.00% | +2,562+9.3% | Added |
| Neville Rodie & Shaw Inc | 29,442 | $695.0K | 0.05% | −23,901−44.8% | Reduced |
| Clifford Swan Investment Counsel LLC | 28,576 | $674.7K | 0.02% | −54−0.2% | Reduced |
| Oak Thistle LLC | 28,230 | $666.5K | 0.10% | +28,230 | New |
| Stephens Inc | 27,900 | $658.7K | 0.01% | −4,829−14.8% | Reduced |
| Lathrop Investment Management Corp | 27,811 | $657.0K | 0.12% | −12,713−31.4% | Reduced |
| Security National Bank of So Dak | 26,840 | $633.7K | 0.35% | +2,016+8.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 26,838 | $633.6K | 0.00% | −8,100−23.2% | Reduced |
| Modera Wealth Management, LLC | 26,224 | $619.1K | 0.01% | −1,624−5.8% | Reduced |
| Sit Investment Associates Inc | 26,202 | $619.0K | 0.01% | +1,502+6.1% | Added |
| Entropy Technologies, LP | 26,167 | $617.8K | 0.05% | +26,167 | New |
| US Bancorp | 26,122 | $616.7K | 0.00% | +2,564+10.9% | Added |
| Proficio Capital Partners LLC | 26,031 | $614.6K | 0.04% | +3,054+13.3% | Added |
| Marco Investment Management LLC | 25,157 | $594.0K | 0.05% | −4,088−14.0% | Reduced |
| Gabelli Funds LLC | 25,053 | $591.5K | 0.00% | +25,053 | New |
| Iat Reinsurance Co Ltd. | 24,693 | $583.0K | 0.13% | +24,693 | New |
| Wesbanco Bank Inc | 24,466 | $577.6K | 0.02% | +416+1.7% | Added |
| Peak Asset Management, LLC | 24,000 | $566.6K | 0.10% | 00.0% | Unchanged |
| Algert Global LLC | 23,880 | $563.8K | 0.01% | +23,880 | New |
| Pictet Asset Management Holding SA | 23,191 | $547.5K | 0.00% | +1,924+9.0% | Added |
| Truist Financial Corp | 22,516 | $531.6K | 0.00% | +794+3.7% | Added |
| Sandia Investment Management LP | 22,505 | $531.3K | 1.36% | +2,700+13.6% | Added |
| Commonwealth Equity Services, LLC | 22,138 | $523.0K | 0.00% | −5,977−21.3% | Reduced |
| Advisor Group Holdings, Inc. | 21,993 | $519.1K | 0.00% | +1,396+6.8% | Added |
| Bryn Mawr Trust Co | 20,849 | $492.2K | 0.01% | +983+4.9% | Added |
| Granite Investment Partners, LLC | 19,973 | $471.6K | 0.02% | −80−0.4% | Reduced |
| Mutual of America Capital Management LLC | 19,379 | $457.5K | 0.00% | −1,578−7.5% | Reduced |
| Security National Bank of Sioux City Iowa | 19,273 | $455.0K | 0.32% | +2,204+12.9% | Added |
| Phoenix Holdings Ltd. | 18,932 | $447.0K | 0.01% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 18,179 | $429.0K | 0.00% | +2,992+19.7% | Added |
| CWM, LLC | 17,482 | $413.0K | 0.00% | +13,148+303.4% | Added |
| Deutsche Bank AG | 17,399 | $410.8K | 0.00% | +311+1.8% | Added |
| Intrinsic Value Partners, LLC | 16,679 | $393.8K | 0.35% | +791+5.0% | Added |
| Leavell Investment Management, Inc. | 16,138 | $381.0K | 0.02% | +4,524+39.0% | Added |
| IMC-Chicago, LLC | 15,710 | $370.9K | 0.01% | +15,710 | New |
| Axq Capital, LP | 15,609 | $368.5K | 0.12% | +15,609 | New |
| First Manhattan Co | 15,435 | $364.4K | 0.00% | −574−3.6% | Reduced |
| Rock Creek Group, LP | 15,000 | $354.1K | 0.04% | −10,000−40.0% | Reduced |
| JustInvest LLC | 14,605 | $351.5K | 0.00% | +14,605 | New |
| HighTower Advisors, LLC | 14,858 | $350.8K | 0.00% | −1,843−11.0% | Reduced |
| Cahaba Wealth Management, Inc. | 14,472 | $341.7K | 0.03% | +829+6.1% | Added |
| Cetera Investment Advisers | 14,179 | $334.8K | 0.00% | +14,179 | New |
| First Bank & Trust | 14,043 | $331.6K | 0.06% | −314−2.2% | Reduced |
| CIBC Asset Management Inc | 13,992 | $330.4K | 0.00% | +839+6.4% | Added |
| The PNC Financial Services Group, Inc. | 13,924 | $328.7K | 0.00% | −1,638−10.5% | Reduced |
| Two Sigma Investments, LP | 13,729 | $324.1K | 0.00% | −40,371−74.6% | Reduced |