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 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
- −$931.8M (−17.7%) 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 | $4.34B |
| 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 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 |
|---|---|---|---|---|---|
| Atlas Capital Advisors LLC | 1,684 | $34.8K | 0.00% | −121−6.7% | Reduced |
| Financial Consulate, Inc | 1,550 | $32.0K | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 1,484 | $30.7K | 0.00% | +1,484 | New |
| FIL Ltd | 1,376 | $28.4K | 0.00% | −650,783−99.8% | Reduced |
| Atlantic Union Bankshares Corp | 1,373 | $28.4K | 0.00% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 1,350 | $27.9K | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 1,262 | $26.1K | 0.00% | +1,029+441.6% | Added |
| 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 |
| Brown Brothers Harriman & Co | 1,221 | $25.2K | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 1,081 | $22.9K | 0.00% | 00.0% | Unchanged |
| Salem Investment Counselors Inc | 1,082 | $22.4K | 0.00% | +1,082 | New |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 1,033 | $21.4K | 0.01% | +980+1,849.1% | Added |
| Smartleaf Asset Management LLC | 1,045 | $21.1K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 995 | $20.6K | 0.00% | +643+182.7% | Added |
| Essential Partners LLC | 933 | $19.3K | 0.01% | −3,279−77.8% | Reduced |
| Los Angeles Capital Management LLC | 893 | $18.5K | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 858 | $17.7K | 0.00% | −34−3.8% | Reduced |
| Elequin Capital LP | 833 | $17.2K | 0.00% | +833 | New |
| Korea Investment CORP | 781 | $16.1K | 0.00% | 00.0% | Unchanged |
| Chung Wu Investment Group, LLC | 744 | $15.4K | 0.01% | 00.0% | Unchanged |
| GWM Advisors LLC | 674 | $13.9K | 0.00% | −6−0.9% | Reduced |
| Strategic Wealth Partners, Ltd. | 659 | $13.6K | 0.00% | −165−20.0% | Reduced |
| Steward Partners Investment Advisory, LLC | 653 | $13.5K | 0.00% | −98−13.0% | Reduced |
| Evolution Advisers, Inc. | 650 | $13.0K | 0.00% | +14+2.2% | Added |
| Northwestern Mutual Wealth Management Co | 628 | $13.0K | 0.00% | −137−17.9% | Reduced |
| Parvin Asset Management, LLC | 610 | $12.6K | 0.01% | −393−39.2% | Reduced |
| Parkside Financial Bank & Trust | 559 | $11.6K | 0.00% | +11+2.0% | Added |
| N.E.W. Advisory Services LLC | 542 | $11.2K | 0.00% | 00.0% | Unchanged |
| Colonial Trust Advisors | 538 | $11.1K | 0.00% | 00.0% | Unchanged |
| Axiom Investment Management LLC | 530 | $11.0K | 0.01% | +530 | New |
| Federation des caisses Desjardins du Quebec | 522 | $10.8K | 0.00% | −937−64.2% | Reduced |
| Ronald Blue Trust, Inc. | 515 | $10.6K | 0.00% | −25−4.6% | Reduced |
| Sfam, LLC | 487 | $10.1K | 0.01% | 00.0% | Unchanged |
| Rothschild Investment LLC | 480 | $9.92K | 0.00% | −31−6.1% | Reduced |
| Keating Financial Advisory Services, Inc. | 476 | $9.84K | 0.00% | −294−38.2% | Reduced |
| Bare Financial Services, Inc | 458 | $9.47K | 0.00% | +136+42.2% | Added |
| Quent Capital, LLC | 429 | $8.87K | 0.00% | −181−29.7% | Reduced |
| Basecamp Wealth Advisors LLC | 399 | $8.25K | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 351 | $7.25K | 0.00% | 00.0% | Unchanged |
| LRI Investments, LLC | 338 | $6.99K | 0.00% | +6+1.8% | Added |
| Bartlett & Co. Wealth Management LLC | 334 | $6.90K | 0.00% | −150−31.0% | 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 |
| Private Trust Co NA | 317 | $6.55K | 0.00% | −68−17.7% | Reduced |
| Moisand Fitzgerald Tamayo, LLC | 314 | $6.49K | 0.00% | 00.0% | Unchanged |
| Kemnay Advisory Services Inc. | 313 | $6.47K | 0.00% | +313 | New |
| SBI Securities Co., Ltd. | 298 | $6.16K | 0.00% | +227+319.7% | Added |
| Tower Research Capital LLC (TRC) | 291 | $6.01K | 0.00% | −1,719−85.5% | Reduced |
| Rossby Financial, LCC | 288 | $5.95K | 0.00% | 00.0% | Unchanged |
| Murphy & Mullick Capital Management Corp | 283 | $5.85K | 0.00% | 00.0% | Unchanged |
| Steigerwald, Gordon & Koch Inc. | 272 | $5.62K | 0.00% | 00.0% | Unchanged |
| Oakworth Capital, Inc. | 271 | $5.49K | 0.00% | 00.0% | Unchanged |
| Pinnacle Bancorp, Inc. | 260 | $5.37K | 0.00% | +39+17.6% | Added |
| National Bank of Canada | 249 | $5.23K | 0.00% | −10,626−97.7% | Reduced |
| TD Private Client Wealth LLC | 248 | $5.13K | 0.00% | +105+73.4% | Added |
| Golden State Wealth Management, LLC | 246 | $5.08K | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 243 | $5.02K | 0.00% | −14−5.4% | Reduced |
| Picton Mahoney Asset Management | 240 | $4.96K | 0.00% | −26,995−99.1% | Reduced |
| Financial Management Professionals, Inc. | 228 | $4.71K | 0.00% | 00.0% | Unchanged |
| Perkins Coie Trust Co | 219 | $4.52K | 0.00% | 00.0% | Unchanged |
| Old Second National Bank of Aurora | 212 | $4.38K | 0.00% | 00.0% | Unchanged |
| ZRC Wealth Management, LLC | 199 | $4.11K | 0.00% | +199 | New |
| True Wealth Design, LLC | 197 | $4.07K | 0.00% | +37+23.1% | Added |
| Bellevue Asset Management, LLC | 197 | $4.07K | 0.00% | 00.0% | Unchanged |
| Sachetta, LLC | 194 | $4.01K | 0.00% | 00.0% | Unchanged |
| Cromwell Holdings LLC | 184 | $3.80K | 0.00% | 00.0% | Unchanged |
| Glen Eagle Advisors, LLC | 184 | $3.80K | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 180 | $3.72K | 0.00% | +32+21.6% | Added |
| Elevated Capital Advisors, LLC | 177 | $3.66K | 0.00% | 00.0% | Unchanged |
| Private Wealth Management Group, LLC | 177 | $3.66K | 0.00% | +77+77.0% | Added |
| Versant Capital Management, Inc | 171 | $3.54K | 0.00% | −113−39.8% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 170 | $3.51K | 0.00% | 00.0% | Unchanged |
| Geneos Wealth Management Inc. | 170 | $3.51K | 0.00% | 00.0% | Unchanged |
| Atlantic Edge Private Wealth Management, LLC | 164 | $3.39K | 0.00% | 00.0% | Unchanged |
| Y.D. More Investments Ltd | 158 | $3.26K | 0.00% | −178−53.0% | Reduced |
| Bogart Wealth, LLC | 154 | $3.18K | 0.00% | +135+710.5% | Added |
| Brooklyn FI, LLC | 135 | $2.89K | 0.00% | +135 | New |
| Quarry LP | 139 | $2.87K | 0.00% | −2,411−94.5% | Reduced |
| CVA Family Office, LLC | 131 | $2.71K | 0.00% | +62+89.9% | Added |
| Mather Group, LLC. | 121 | $2.50K | 0.00% | −1,228−91.0% | Reduced |
| Brown, Lisle/Cummings, Inc. | 118 | $2.44K | 0.00% | −4−3.3% | Reduced |
| Roxbury Financial LLC | 118 | $2.44K | 0.00% | 00.0% | Unchanged |
| BankPlus Trust Department | 110 | $2.27K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 109 | $2.25K | 0.00% | −7−6.0% | Reduced |
| Grove Bank & Trust | 108 | $2.23K | 0.00% | 00.0% | Unchanged |
| Godsey & Gibb Associates | 106 | $2.19K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 106 | $2.19K | 0.00% | 00.0% | Unchanged |
| Ramirez Asset Management, Inc. | 106 | $2.19K | 0.00% | 00.0% | Unchanged |
| Crews Bank & Trust | 100 | $2.07K | 0.00% | 00.0% | Unchanged |
| Rosenberg Matthew Hamilton | 99 | $2.05K | 0.00% | 00.0% | Unchanged |
| Central Trust Co | 96 | $1.99K | 0.00% | −40−29.4% | Reduced |
| Evolution Wealth Management Inc. | 88 | $1.82K | 0.00% | +88 | New |
| NBH Bank | 78 | $1.61K | 0.00% | +78 | New |
| Farmers & Merchants Investments Inc | 75 | $1.55K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 74 | $1.53K | 0.00% | −65−46.8% | Reduced |
| Hughes Financial Services, LLC | 69 | $1.43K | 0.00% | −1−1.4% | Reduced |
| Owl Creek Wealth Partners LLC | 65 | $1.34K | 0.00% | 00.0% | Unchanged |
| Proathlete Wealth Management LLC | 64 | $1.32K | 0.00% | 00.0% | Unchanged |
| Anchor Investment Management, LLC | 63 | $1.30K | 0.00% | 00.0% | Unchanged |