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, Q1 2025
Institutional positions in Amentum Holdings, Inc. as of Mar 31, 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
- 418
- −22 vs. Q4 2024
- Shares held
- 191.7M
- +26.8M (+16.3%) vs. Q4 2024
- Total value
- $3.49B
- +$18.2M (+0.5%) vs. Q4 2024
- New holders
- 73
- 112 more added
- Sold out
- 95
- 151 more reduced
11 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2025
Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rangeley Capital, LLC | 12,500 | $227.5K | 0.26% | −34,500−73.4% | Reduced |
| Public Employees Retirement Association of Colorado | 12,768 | $232.0K | 0.00% | 00.0% | Unchanged |
| Shufro Rose & Co LLC | 13,034 | $237.2K | 0.02% | −610−4.5% | Reduced |
| Clear Street Markets LLC | 13,062 | $237.7K | 0.16% | +13,062 | New |
| CIBC Asset Management Inc | 13,153 | $239.4K | 0.00% | +917+7.5% | Added |
| Stifel Financial Corp | 13,238 | $241.0K | 0.00% | −33,696−71.8% | Reduced |
| Cahaba Wealth Management, Inc. | 13,643 | $248.3K | 0.02% | 00.0% | Unchanged |
| Walleye Capital LLC | 14,069 | $256.1K | 0.00% | +14,069 | New |
| First Bank & Trust | 14,357 | $261.3K | 0.05% | +3,985+38.4% | Added |
| Cambridge Investment Research Advisors, Inc. | 15,187 | $276.0K | 0.00% | −1,949−11.4% | Reduced |
| The PNC Financial Services Group, Inc. | 15,562 | $283.2K | 0.00% | −14,186−47.7% | Reduced |
| Intrinsic Value Partners, LLC | 15,888 | $289.2K | 0.29% | −1,085−6.4% | Reduced |
| First Manhattan Co | 16,009 | $291.4K | 0.00% | −1,593−9.1% | Reduced |
| Neuberger Berman Group LLC | 16,153 | $294.0K | 0.00% | −5,168−24.2% | Reduced |
| Paralel Advisors LLC | 16,329 | $297.2K | 0.01% | 00.0% | Unchanged |
| HighTower Advisors, LLC | 16,701 | $304.0K | 0.00% | +148+0.9% | Added |
| Security National Bank of Sioux City Iowa | 17,069 | $310.7K | 0.23% | +1,800+11.8% | Added |
| Armstrong Henry H Associates Inc | 17,081 | $310.9K | 0.03% | 00.0% | Unchanged |
| Deutsche Bank AG | 17,088 | $311.0K | 0.00% | +2,820+19.8% | Added |
| Jacobs Levy Equity Management, Inc | 17,533 | $319.1K | 0.00% | −127,938−87.9% | Reduced |
| Hyperion Capital Advisors LP | 18,586 | $338.3K | 0.18% | −977−5.0% | Reduced |
| Phoenix Holdings Ltd. | 18,932 | $344.6K | 0.01% | 00.0% | Unchanged |
| Kirtland Hills Capital Management, LLC | 18,542 | $348.4K | 0.21% | 00.0% | Unchanged |
| Creative Planning | 19,187 | $349.2K | 0.00% | −594−3.0% | Reduced |
| Sandia Investment Management LP | 19,805 | $360.5K | 1.05% | +19,805 | New |
| Bryn Mawr Trust Co | 19,866 | $361.6K | 0.01% | −12,393−38.4% | Reduced |
| Granite Investment Partners, LLC | 20,053 | $365.0K | 0.02% | −18,280−47.7% | Reduced |
| Advisor Group Holdings, Inc. | 20,597 | $374.8K | 0.00% | +618+3.1% | Added |
| Captrust Financial Advisors | 20,615 | $375.2K | 0.00% | −5,241−20.3% | Reduced |
| Mutual of America Capital Management LLC | 20,957 | $381.4K | 0.00% | +2,161+11.5% | Added |
| Pictet Asset Management Holding SA | 21,267 | $387.1K | 0.00% | +1,509+7.6% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 21,465 | $390.7K | 0.00% | −10,700−33.3% | Reduced |
| Truist Financial Corp | 21,722 | $395.3K | 0.00% | −6,636−23.4% | Reduced |
| Proficio Capital Partners LLC | 22,977 | $411.6K | 0.03% | +22,977 | New |
| Police & Firemen's Retirement System of New Jersey | 23,122 | $420.8K | 0.00% | +4,256+22.6% | Added |
| US Bancorp | 23,558 | $428.8K | 0.00% | −4,384−15.7% | Reduced |
| Colony Group, LLC | 23,759 | $432.4K | 0.00% | −177,585−88.2% | Reduced |
| Quest Partners LLC | 23,780 | $432.8K | 0.05% | 00.0% | Unchanged |
| Peak Asset Management, LLC | 24,000 | $436.8K | 0.08% | 00.0% | Unchanged |
| Wesbanco Bank Inc | 24,050 | $437.7K | 0.02% | 00.0% | Unchanged |
| Sit Investment Associates Inc | 24,700 | $450.0K | 0.01% | 00.0% | Unchanged |
| Security National Bank of So Dak | 24,824 | $451.8K | 0.26% | +1,525+6.5% | Added |
| Rock Creek Group, LP | 25,000 | $455.0K | 0.05% | +25,000 | New |
| Two Sigma Advisers, LP | 25,500 | $464.1K | 0.00% | +25,500 | New |
| Jones Financial Companies LLLP | 27,594 | $499.2K | 0.00% | −9,415−25.4% | Reduced |
| Modera Wealth Management, LLC | 27,848 | $506.8K | 0.01% | −7,343−20.9% | Reduced |
| Carlson Capital L P | 28,000 | $509.6K | 0.28% | +28,000 | New |
| Commonwealth Equity Services, LLC | 28,115 | $512.0K | 0.00% | −4,465−13.7% | Reduced |
| Quantbot Technologies LP | 28,362 | $516.2K | 0.02% | +28,362 | New |
| Clifford Swan Investment Counsel LLC | 28,630 | $521.1K | 0.02% | −800−2.7% | Reduced |
| Marco Investment Management LLC | 29,245 | $532.3K | 0.05% | −6,730−18.7% | Reduced |
| Victory Capital Management Inc | 29,859 | $543.4K | 0.00% | −12,460−29.4% | Reduced |
| Nisa Investment Advisors, LLC | 30,487 | $554.9K | 0.00% | −4,512−12.9% | Reduced |
| Gsa Capital Partners LLP | 30,488 | $555.0K | 0.05% | +30,488 | New |
| Renaissance Technologies LLC | 31,400 | $571.5K | 0.00% | +20,400+185.5% | Added |
| Everett Harris & Co | 31,410 | $571.7K | 0.01% | −10,478−25.0% | Reduced |
| Cantor Fitzgerald, L. P. | 31,514 | $573.6K | 0.02% | +31,514 | New |
| Mariner, LLC | 31,729 | $577.5K | 0.00% | −7,155−18.4% | Reduced |
| ABS Direct Equity Fund LLC | 32,500 | $591.5K | 0.79% | +32,500 | New |
| Wolverine Trading, LLC | 32,816 | $593.0K | 0.02% | −38,287−53.8% | Reduced |
| Stephens Inc | 32,729 | $595.7K | 0.01% | −3,973−10.8% | Reduced |
| Oregon Public Employees Retirement Fund | 32,800 | $597.0K | 0.01% | +3,600+12.3% | Added |
| National Philanthropic Trust | 33,021 | $601.0K | 0.01% | −15,642−32.1% | Reduced |
| Wolverine Asset Management LLC | 33,240 | $605.0K | 0.01% | +33,240 | New |
| Janney Montgomery Scott LLC | 33,767 | $615.0K | 0.00% | +33,767 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 34,352 | $625.2K | 0.00% | +7,862+29.7% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 34,938 | $635.9K | 0.00% | −1,600−4.4% | Reduced |
| Sig Brokerage, LP | 35,052 | $637.9K | 0.19% | +35,052 | New |
| Bank of Montreal | 35,459 | $645.4K | 0.00% | −24,282−40.6% | Reduced |
| American Trust Investment Advisors, LLC | 35,688 | $649.5K | 0.27% | −2,166−5.7% | Reduced |
| Manufacturers Life Insurance Company, The | 37,520 | $682.9K | 0.00% | +37,520 | New |
| Williams Jones Wealth Management, LLC. | 38,110 | $693.6K | 0.01% | −2,935−7.2% | Reduced |
| Ensign Peak Advisors, Inc | 38,260 | $696.3K | 0.00% | 00.0% | Unchanged |
| Arizona State Retirement System | 38,385 | $698.6K | 0.00% | −450−1.2% | Reduced |
| Allianz Asset Management GmbH | 38,700 | $704.3K | 0.00% | +38,700 | New |
| Cerity Partners LLC | 38,804 | $706.2K | 0.00% | −30,719−44.2% | Reduced |
| Tower Bridge Advisors | 38,888 | $707.8K | 0.08% | −54,844−58.5% | Reduced |
| Versor Investments LP | 39,400 | $717.1K | 0.12% | +39,400 | New |
| Pine Valley Investments Ltd Liability Co | 39,820 | $724.7K | 0.05% | +260+0.7% | Added |
| Freestone Capital Holdings, LLC | 40,027 | $728.5K | 0.03% | +40,027 | New |
| Clear Harbor Asset Management, LLC | 40,543 | $737.9K | 0.06% | +40,543 | New |
| Lathrop Investment Management Corp | 40,524 | $738.0K | 0.15% | −43,520−51.8% | Reduced |
| Quantinno Capital Management LP | 41,210 | $750.0K | 0.00% | +3,895+10.4% | Added |
| AWH Capital, L.P. | 42,500 | $773.5K | 1.12% | +42,500 | New |
| Hikari Tsushin, Inc. | 42,800 | $779.0K | 0.05% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 43,236 | $786.9K | 0.00% | −29,547−40.6% | Reduced |
| Amalgamated Bank | 43,366 | $789.0K | 0.01% | +4,756+12.3% | Added |
| Highland Capital Management Fund Advisors, L.P. | 43,900 | $799.0K | 0.08% | +25,905+144.0% | Added |
| Yousif Capital Management, LLC | 46,440 | $845.2K | 0.01% | −2,330−4.8% | Reduced |
| Public Employees Retirement System of Ohio | 47,616 | $866.6K | 0.00% | +3,010+6.7% | Added |
| Paragon Capital Management LLC | 48,072 | $874.9K | 0.50% | −2,024−4.0% | Reduced |
| Maryland State Retirement & Pension System | 49,022 | $892.2K | 0.02% | +114+0.2% | Added |
| Wells Fargo & Company | 50,452 | $918.2K | 0.00% | −39,109−43.7% | Reduced |
| Simplex Trading, LLC | 52,827 | $961.0K | 0.03% | −167,154−76.0% | Reduced |
| Neville Rodie & Shaw Inc | 53,343 | $971.0K | 0.08% | −27,656−34.1% | Reduced |
| Engineers Gate Manager LP | 53,830 | $979.7K | 0.02% | +53,830 | New |
| Washington Trust Advisors, Inc. | 53,846 | $980.0K | 0.09% | −26,394−32.9% | Reduced |
| Two Sigma Investments, LP | 54,100 | $984.6K | 0.00% | +54,100 | New |
| Blair William & Co | 54,200 | $986.4K | 0.00% | −2,219−3.9% | Reduced |
| Alliancebernstein L.P. | 55,179 | $1.00M | 0.00% | +7,126+14.8% | Added |