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 $4.35B in total; Soros Fund Management is the only superinvestor holding it.
13F holders, Q2 2026
Institutional positions in Amentum Holdings, Inc. as of Jun 30, 2026. 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
- 464
- −15 vs. Q1 2026
- Shares held
- 218.9M
- +7.93M (+3.8%) vs. Q1 2026
- Total value
- $4.34B
- −$930.3M (−17.6%) vs. Q1 2026
- New holders
- 59
- 147 more added
- Sold out
- 74
- 161 more reduced
7 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | $4.35B |
| Q1 2026 | 486 | $5.28B |
| Q4 2025 | 483 | $5.64B |
| Q3 2025 | 462 | $4.63B |
| Q2 2025 | 461 | $4.74B |
| Q1 2025 | 418 | $3.50B |
| Q4 2024 | 451 | $3.50B |
| Q3 2024 | 492 | $3.25B |
| 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 2026
Shares, value and share of portfolio for each institution holding Amentum Holdings, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| ZRC Wealth Management, LLC | 199 | $4.11K | 0.00% | +199 | New |
| Old Second National Bank of Aurora | 212 | $4.38K | 0.00% | 00.0% | Unchanged |
| Perkins Coie Trust Co | 219 | $4.52K | 0.00% | 00.0% | Unchanged |
| Financial Management Professionals, Inc. | 228 | $4.71K | 0.00% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 240 | $4.96K | 0.00% | −26,995−99.1% | Reduced |
| AdvisorNet Financial, Inc | 243 | $5.02K | 0.00% | −14−5.4% | Reduced |
| Golden State Wealth Management, LLC | 246 | $5.08K | 0.00% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 248 | $5.13K | 0.00% | +105+73.4% | Added |
| National Bank of Canada | 249 | $5.23K | 0.00% | −10,626−97.7% | Reduced |
| Pinnacle Bancorp, Inc. | 260 | $5.37K | 0.00% | +39+17.6% | Added |
| Oakworth Capital, Inc. | 271 | $5.49K | 0.00% | 00.0% | Unchanged |
| Steigerwald, Gordon & Koch Inc. | 272 | $5.62K | 0.00% | 00.0% | Unchanged |
| Murphy & Mullick Capital Management Corp | 283 | $5.85K | 0.00% | 00.0% | Unchanged |
| Rossby Financial, LCC | 288 | $5.95K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 291 | $6.01K | 0.00% | −1,719−85.5% | Reduced |
| SBI Securities Co., Ltd. | 298 | $6.16K | 0.00% | +227+319.7% | Added |
| Kemnay Advisory Services Inc. | 313 | $6.47K | 0.00% | +313 | New |
| Moisand Fitzgerald Tamayo, LLC | 314 | $6.49K | 0.00% | 00.0% | Unchanged |
| Private Trust Co NA | 317 | $6.55K | 0.00% | −68−17.7% | Reduced |
| Chesapeake Asset Management LLC | 333 | $6.88K | 0.01% | −36−9.8% | Reduced |
| Larson Financial Group LLC | 333 | $6.88K | 0.00% | −9−2.6% | Reduced |
| Bartlett & Co. Wealth Management LLC | 334 | $6.90K | 0.00% | −150−31.0% | Reduced |
| LRI Investments, LLC | 338 | $6.99K | 0.00% | +6+1.8% | Added |
| CoreCap Advisors, LLC | 351 | $7.25K | 0.00% | 00.0% | Unchanged |
| Basecamp Wealth Advisors LLC | 399 | $8.25K | 0.00% | 00.0% | Unchanged |
| Quent Capital, LLC | 429 | $8.87K | 0.00% | −181−29.7% | Reduced |
| Bare Financial Services, Inc | 458 | $9.47K | 0.00% | +136+42.2% | Added |
| Keating Financial Advisory Services, Inc. | 476 | $9.84K | 0.00% | −294−38.2% | Reduced |
| Rothschild Investment LLC | 480 | $9.92K | 0.00% | −31−6.1% | Reduced |
| Sfam, LLC | 487 | $10.1K | 0.01% | 00.0% | Unchanged |
| Ronald Blue Trust, Inc. | 515 | $10.6K | 0.00% | −25−4.6% | Reduced |
| Federation des caisses Desjardins du Quebec | 522 | $10.8K | 0.00% | −937−64.2% | Reduced |
| Axiom Investment Management LLC | 530 | $11.0K | 0.01% | +530 | New |
| Colonial Trust Advisors | 538 | $11.1K | 0.00% | 00.0% | Unchanged |
| N.E.W. Advisory Services LLC | 542 | $11.2K | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 559 | $11.6K | 0.00% | +11+2.0% | Added |
| Parvin Asset Management, LLC | 610 | $12.6K | 0.01% | −393−39.2% | Reduced |
| Northwestern Mutual Wealth Management Co | 628 | $13.0K | 0.00% | −137−17.9% | Reduced |
| Evolution Advisers, Inc. | 650 | $13.0K | 0.00% | +14+2.2% | Added |
| Steward Partners Investment Advisory, LLC | 653 | $13.5K | 0.00% | −98−13.0% | Reduced |
| Strategic Wealth Partners, Ltd. | 659 | $13.6K | 0.00% | −165−20.0% | Reduced |
| GWM Advisors LLC | 674 | $13.9K | 0.00% | −6−0.9% | Reduced |
| Chung Wu Investment Group, LLC | 744 | $15.4K | 0.01% | 00.0% | Unchanged |
| Korea Investment CORP | 781 | $16.1K | 0.00% | 00.0% | Unchanged |
| Elequin Capital LP | 833 | $17.2K | 0.00% | +833 | New |
| Harbour Investments, Inc. | 858 | $17.7K | 0.00% | −34−3.8% | Reduced |
| Los Angeles Capital Management LLC | 893 | $18.5K | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 933 | $19.3K | 0.01% | −3,279−77.8% | Reduced |
| IFP Advisors, Inc | 995 | $20.6K | 0.00% | +643+182.7% | Added |
| Smartleaf Asset Management LLC | 1,045 | $21.1K | 0.00% | 00.0% | Unchanged |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 1,033 | $21.4K | 0.01% | +980+1,849.1% | Added |
| Salem Investment Counselors Inc | 1,082 | $22.4K | 0.00% | +1,082 | New |
| Whittier Trust Co of Nevada Inc | 1,081 | $22.9K | 0.00% | 00.0% | Unchanged |
| Brown Brothers Harriman & Co | 1,221 | $25.2K | 0.00% | 00.0% | Unchanged |
| HM Payson & Co | 1,226 | $25.3K | 0.00% | −715−36.8% | Reduced |
| EverSource Wealth Advisors, LLC | 1,226 | $25.3K | 0.00% | −306−20.0% | Reduced |
| Clearstead Advisors, LLC | 1,262 | $26.1K | 0.00% | +1,029+441.6% | Added |
| Newbridge Financial Services Group, Inc. | 1,350 | $27.9K | 0.00% | 00.0% | Unchanged |
| Atlantic Union Bankshares Corp | 1,373 | $28.4K | 0.00% | 00.0% | Unchanged |
| FIL Ltd | 1,376 | $28.4K | 0.00% | −650,783−99.8% | Reduced |
| Global Retirement Partners, LLC | 1,484 | $30.7K | 0.00% | +1,484 | New |
| Financial Consulate, Inc | 1,550 | $32.0K | 0.00% | 00.0% | Unchanged |
| Atlas Capital Advisors LLC | 1,684 | $34.8K | 0.00% | −121−6.7% | Reduced |
| Asset Planning,Inc | 1,793 | $37.1K | 0.02% | 00.0% | Unchanged |
| Nykredit A/S | 1,800 | $37.2K | 0.00% | +1,800 | New |
| Salomon & Ludwin, LLC | 1,868 | $37.7K | 0.00% | +563+43.1% | Added |
| Umb Bank N A | 1,844 | $38.1K | 0.00% | −657−26.3% | Reduced |
| Pinnacle Wealth Planning Services, Inc. | 1,932 | $39.9K | 0.00% | −1,208−38.5% | Reduced |
| Signaturefd, LLC | 2,164 | $44.7K | 0.00% | −170−7.3% | Reduced |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 2,174 | $44.9K | 0.00% | 00.0% | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 2,375 | $49.1K | 0.00% | +48+2.1% | Added |
| MetLife Investment Management | 2,489 | $51.4K | 0.00% | −120−4.6% | Reduced |
| Farther Finance Advisors, LLC | 2,521 | $52.1K | 0.00% | −129−4.9% | Reduced |
| McDonald Partners LLC | 3,092 | $63.9K | 0.02% | +3,092 | New |
| TD Waterhouse Canada Inc. | 3,342 | $67.5K | 0.00% | −1,106−24.9% | Reduced |
| Covestor Ltd | 3,512 | $73.0K | 0.04% | +1,138+47.9% | Added |
| Washington Trust Advisors, Inc. | 3,598 | $74.4K | 0.01% | −4,532−55.7% | Reduced |
| Whittier Trust Co | 3,614 | $80.4K | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 3,948 | $81.6K | 0.00% | −347−8.1% | Reduced |
| New Age Alpha Advisors, LLC | 4,015 | $83.0K | 0.00% | +4,015 | New |
| Rockefeller Capital Management L.P. | 4,108 | $84.9K | 0.00% | −143−3.4% | Reduced |
| Horizon Investments, LLC | 4,407 | $91.1K | 0.00% | +684+18.4% | Added |
| GAMMA Investing LLC | 4,958 | $102.5K | 0.00% | −701−12.4% | Reduced |
| BOK Financial Private Wealth, Inc. | 5,268 | $108.9K | 0.01% | −856−14.0% | Reduced |
| KBC Group NV | 5,431 | $112.0K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 6,195 | $128.1K | 0.00% | +2,387+62.7% | Added |
| CX Institutional | 7,694 | $159.0K | 0.00% | −202−2.6% | Reduced |
| Smithfield Trust Co | 7,890 | $161.0K | 0.01% | 00.0% | Unchanged |
| Aberdeen Wealth Management LLC | 8,291 | $171.4K | 0.08% | −348−4.0% | Reduced |
| SRS Capital Advisors, Inc. | 8,294 | $171.4K | 0.00% | +6,633+399.3% | Added |
| Danske Bank A/S | 8,536 | $176.4K | 0.00% | +407+5.0% | Added |
| Ensign Peak Advisors, Inc | 9,386 | $194.0K | 0.00% | 00.0% | Unchanged |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 9,500 | $196.4K | 0.00% | 00.0% | Unchanged |
| Excelsior Advisor Network LLC | 9,779 | $202.1K | 0.03% | +9,779 | New |
| SFMG, LLC | 9,785 | $202.3K | 0.01% | 00.0% | Unchanged |
| Allworth Financial LP | 9,805 | $202.7K | 0.00% | −199−2.0% | Reduced |
| Cinctive Capital Management LP | 10,000 | $206.7K | 0.01% | +10,000 | New |
| Advyzon Investment Management, LLC | 10,228 | $211.4K | 0.02% | −123−1.2% | Reduced |
| Lecap Asset Management Ltd | 10,370 | $214.3K | 0.09% | +10,370 | New |
| AE Wealth Management LLC | 10,379 | $214.5K | 0.00% | +1,139+12.3% | Added |