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 |
|---|---|---|---|---|---|
| Zurcher Kantonalbank (Zurich Cantonalbank) | 36,538 | $768.4K | 0.00% | −45,558−55.5% | Reduced |
| Stephens Inc | 36,702 | $771.8K | 0.01% | −4,224−10.3% | Reduced |
| Jones Financial Companies LLLP | 37,009 | $778.3K | 0.00% | +37,009 | New |
| Quantinno Capital Management LP | 37,315 | $784.7K | 0.01% | +10,022+36.7% | Added |
| Standard Life Aberdeen plc | 35,555 | $792.9K | 0.00% | +35,555 | New |
| American Trust Investment Advisors, LLC | 37,854 | $796.1K | 0.33% | −560−1.5% | Reduced |
| Ensign Peak Advisors, Inc | 38,260 | $804.6K | 0.00% | −5,429−12.4% | Reduced |
| Granite Investment Partners, LLC | 38,333 | $806.1K | 0.03% | −2,538−6.2% | Reduced |
| Amalgamated Bank | 38,610 | $812.0K | 0.01% | +13,053+51.1% | Added |
| Arizona State Retirement System | 38,835 | $816.7K | 0.00% | +2,961+8.3% | Added |
| Mariner, LLC | 38,884 | $817.7K | 0.00% | −26,019−40.1% | Reduced |
| Pine Valley Investments Ltd Liability Co | 39,560 | $831.9K | 0.05% | +18,567+88.4% | Added |
| Williams Jones Wealth Management, LLC. | 41,045 | $863.2K | 0.01% | −182,758−81.7% | Reduced |
| Everett Harris & Co | 41,888 | $880.9K | 0.01% | −59,905−58.8% | Reduced |
| Victory Capital Management Inc | 42,319 | $890.0K | 0.00% | −169,831−80.1% | Reduced |
| State of Tennessee, Treasury Department | 42,523 | $894.3K | 0.00% | −76,132−64.2% | Reduced |
| Hikari Tsushin, Inc. | 42,800 | $900.1K | 0.07% | +1,599+3.9% | Added |
| A. D. Beadell Investment Counsel, Inc. | 43,155 | $907.0K | 0.74% | +27,575+177.0% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 44,085 | $927.1K | 0.00% | +5,703+14.9% | Added |
| Public Employees Retirement System of Ohio | 44,606 | $938.1K | 0.00% | +44,606 | New |
| Strategic Advisors LLC | 45,705 | $961.2K | 0.17% | +30,560+201.8% | Added |
| Hilton Capital Management, LLC | 45,849 | $964.2K | 0.08% | +32,111+233.7% | Added |
| Stifel Financial Corp | 46,934 | $987.1K | 0.00% | −18,384−28.1% | Reduced |
| Rangeley Capital, LLC | 47,000 | $988.4K | 0.95% | +47,000 | New |
| Alliancebernstein L.P. | 48,053 | $1.01M | 0.00% | −94,593−66.3% | Reduced |
| National Philanthropic Trust | 48,663 | $1.02M | 0.01% | 00.0% | Unchanged |
| Yousif Capital Management, LLC | 48,770 | $1.03M | 0.01% | +34,291+236.8% | Added |
| Comerica Bank | 48,787 | $1.03M | 0.00% | +48,787 | New |
| Maryland State Retirement & Pension System | 48,908 | $1.03M | 0.02% | +41,787+586.8% | Added |
| Toroso Investments, LLC | 49,457 | $1.04M | 0.01% | +25,630+107.6% | Added |
| Teachers Retirement System of the State of Kentucky | 49,584 | $1.04M | 0.01% | −162,501−76.6% | Reduced |
| Paragon Capital Management LLC | 50,096 | $1.05M | 0.56% | −2,660−5.0% | Reduced |
| Blair William & Co | 56,419 | $1.19M | 0.00% | +26,982+91.7% | Added |
| Algert Global LLC | 56,842 | $1.20M | 0.03% | +56,842 | New |
| Treasurer of the State of North Carolina | 57,093 | $1.20M | 0.00% | +2,620+4.8% | Added |
| TrinityPoint Wealth, LLC | 58,726 | $1.24M | 0.17% | +34,227+139.7% | Added |
| WSFS Capital Management, LLC | 59,474 | $1.25M | 0.07% | +15,387+34.9% | Added |
| Bank of Montreal | 59,741 | $1.26M | 0.00% | +59,741 | New |
| Louisiana State Employees Retirement System | 60,000 | $1.26M | 0.02% | +53,000+757.1% | Added |
| Y-Intercept (Hong Kong) Ltd | 61,268 | $1.29M | 0.09% | +53,898+731.3% | Added |
| Price T Rowe Associates Inc | 62,126 | $1.31M | 0.00% | −112,432−64.4% | Reduced |
| Winton Group Ltd | 64,748 | $1.36M | 0.09% | +64,748 | New |
| Janus Henderson Group PLC | 66,239 | $1.39M | 0.00% | −50,820−43.4% | Reduced |
| State of Alaska, Department of Revenue | 70,447 | $1.48M | 0.02% | +48,680+223.6% | Added |
| Advisors Asset Management, Inc. | 71,249 | $1.50M | 0.03% | −8,003−10.1% | Reduced |
| CenterBook Partners LP | 71,306 | $1.50M | 0.09% | +71,306 | New |
| Arrowstreet Capital, Limited Partnership | 71,946 | $1.51M | 0.00% | +71,946 | New |
| Badgley Phelps Wealth Managers, LLC | 72,233 | $1.52M | 0.04% | −13,983−16.2% | Reduced |
| CI Private Wealth, LLC | 72,783 | $1.53M | 0.00% | +36,778+102.1% | Added |
| State of Wisconsin Investment Board | 74,623 | $1.57M | 0.00% | −35,634−32.3% | Reduced |
| Wolverine Trading, LLC | 71,103 | $1.59M | 0.04% | +71,103 | New |
| Cerity Partners LLC | 69,523 | $1.60M | 0.00% | −11,340−14.0% | Reduced |
| Hahn Capital Management LLC | 77,322 | $1.63M | 0.71% | +25,036+47.9% | Added |
| Washington Trust Advisors, Inc. | 80,240 | $1.69M | 0.14% | −47,958−37.4% | Reduced |
| Neville Rodie & Shaw Inc | 80,999 | $1.70M | 0.12% | −8,978−10.0% | Reduced |
| Lathrop Investment Management Corp | 84,044 | $1.77M | 0.34% | −43,125−33.9% | Reduced |
| AQR Capital Management LLC | 84,357 | $1.77M | 0.00% | −554,969−86.8% | Reduced |
| Raymond James Financial Inc | 85,562 | $1.80M | 0.00% | +85,562 | New |
| Group One Trading, L.P. | 86,036 | $1.81M | 0.06% | +84,988+8,109.5% | Added |
| Teacher Retirement System of Texas | 86,692 | $1.82M | 0.01% | +86,692 | New |
| Wells Fargo & Company | 89,561 | $1.88M | 0.00% | −182,557−67.1% | Reduced |
| XTX Topco Ltd | 90,065 | $1.89M | 0.16% | +82,673+1,118.4% | Added |
| Cinctive Capital Management LP | 91,085 | $1.92M | 0.10% | +91,085 | New |
| North Growth Management Ltd. | 91,000 | $1.92M | 0.36% | −2,000−2.2% | Reduced |
| Crestwood Advisors Group LLC | 93,522 | $1.97M | 0.04% | +13,451+16.8% | Added |
| Tower Bridge Advisors | 93,732 | $1.97M | 0.21% | −31,930−25.4% | Reduced |
| State of New Jersey Common Pension Fund D | 95,677 | $2.01M | 0.01% | +52,341+120.8% | Added |
| Two Point Capital Management, Inc. | 88,129 | $2.08M | 0.74% | +88,129 | New |
| United Capital Financial Advisers, LLC | 102,313 | $2.15M | 0.02% | −28,247−21.6% | Reduced |
| Centiva Capital, LP | 104,140 | $2.19M | 0.08% | +104,140 | New |
| Caption Management, LLC | 109,851 | $2.31M | 0.10% | +109,851 | New |
| Envestnet Asset Management Inc | 112,223 | $2.36M | 0.00% | −205,892−64.7% | Reduced |
| JPMorgan Chase & Co | 113,674 | $2.39M | 0.00% | −157,295−58.0% | Reduced |
| State Board of Administration of Florida Retirement System | 114,636 | $2.41M | 0.00% | −17,878−13.5% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 114,744 | $2.41M | 0.00% | −6,336−5.2% | Reduced |
| LPL Financial LLC | 118,782 | $2.50M | 0.00% | +14,637+14.1% | Added |
| D. E. Shaw & Co., Inc. | 119,936 | $2.52M | 0.00% | +33,546+38.8% | Added |
| HSBC Holdings PLC | 119,517 | $2.53M | 0.00% | −56,271−32.0% | Reduced |
| Prudential Financial Inc | 122,574 | $2.58M | 0.00% | +43,829+55.7% | Added |
| New York State Teachers Retirement System | 124,122 | $2.61M | 0.01% | +7,987+6.9% | Added |
| Pacific Capital Partners Ltd | 125,000 | $2.63M | 1.55% | +125,000 | New |
| Russell Investments Group, Ltd. | 125,538 | $2.64M | 0.00% | +48,147+62.2% | Added |
| Point72 Asset Management, L.P. | 126,382 | $2.66M | 0.01% | +120,373+2,003.2% | Added |
| California State Teachers Retirement System | 131,419 | $2.76M | 0.00% | −85,182−39.3% | Reduced |
| Jacobs Levy Equity Management, Inc | 145,471 | $3.06M | 0.01% | +63,072+76.5% | Added |
| Hutchinson Capital Management | 145,490 | $3.06M | 0.58% | −3,082−2.1% | Reduced |
| Barclays PLC | 169,651 | $3.57M | 0.00% | +9,838+6.2% | Added |
| Mesirow Financial Investment Management, Inc. | 176,931 | $3.72M | 0.07% | −9,059−4.9% | Reduced |
| Avenir Corp | 193,470 | $4.07M | 0.42% | +193,470 | New |
| California Public Employees Retirement System | 197,519 | $4.15M | 0.00% | −58,718−22.9% | Reduced |
| Colony Group, LLC | 201,344 | $4.23M | 0.01% | −73,796−26.8% | Reduced |
| Simplex Trading, LLC | 219,981 | $4.63M | 0.13% | +219,981 | New |
| Swiss National Bank | 263,200 | $5.54M | 0.00% | −49,600−15.9% | Reduced |
| Telos Capital Management, Inc. | 267,036 | $5.62M | 0.60% | +178,744+202.4% | Added |
| Goldman Sachs Group Inc | 272,225 | $5.72M | 0.00% | −510,580−65.2% | Reduced |
| UBS Asset Management Americas Inc | 273,734 | $5.76M | 0.00% | −400,433−59.4% | Reduced |
| SEI Investments Co | 287,313 | $6.04M | 0.01% | +43,597+17.9% | Added |
| Rhumbline Advisers | 295,184 | $6.21M | 0.01% | +73,326+33.1% | Added |
| Nuveen Asset Management, LLC | 303,885 | $6.39M | 0.00% | −132,639−30.4% | Reduced |
| Public Sector Pension Investment Board | 309,186 | $6.50M | 0.03% | +309,186 | New |