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 |
|---|---|---|---|---|---|
| Bokf, NA | 776 | $18.3K | 0.00% | +720+1,285.7% | Added |
| West Oak Capital, LLC | 762 | $18.0K | 0.01% | +762 | New |
| Board of the Pension Protection Fund | 730 | $17.2K | 0.02% | +730 | New |
| Manchester Capital Management LLC | 725 | $17.1K | 0.00% | −602−45.4% | Reduced |
| First Command Advisory Services, Inc. | 695 | $16.4K | 0.00% | +39+5.9% | Added |
| Evolution Advisers, Inc. | 636 | $15.0K | 0.01% | +36+6.0% | Added |
| Macquarie Group Ltd | 621 | $14.7K | 0.00% | +322+107.7% | Added |
| GWM Advisors LLC | 604 | $14.3K | 0.00% | +39+6.9% | Added |
| TD Waterhouse Canada Inc. | 574 | $13.7K | 0.00% | +39+7.3% | Added |
| Private Trust Co NA | 558 | $13.2K | 0.00% | −63−10.1% | Reduced |
| Ronald Blue Trust, Inc. | 556 | $13.1K | 0.00% | +109+24.4% | Added |
| N.E.W. Advisory Services LLC | 542 | $12.8K | 0.00% | +52+10.6% | Added |
| Ransom Advisory, Ltd | 524 | $12.4K | 0.01% | +24+4.8% | Added |
| Twin Peaks Wealth Advisors, LLC | 478 | $12.3K | 0.00% | +478 | New |
| Mendota Financial Group, LLC | 515 | $12.2K | 0.01% | +35+7.3% | Added |
| Global Wealth Strategies & Associates | 493 | $11.6K | 0.00% | +28+6.0% | Added |
| Bartlett & Co. Wealth Management LLC | 484 | $11.4K | 0.00% | +18+3.9% | Added |
| BankPlus Trust Department | 478 | $11.3K | 0.00% | +80+20.1% | Added |
| Beacon Capital Management, LLC | 449 | $10.6K | 0.00% | +25+5.9% | Added |
| Parkside Financial Bank & Trust | 448 | $10.6K | 0.00% | +210+88.2% | Added |
| Covestor Ltd | 413 | $10.0K | 0.01% | −1,786−81.2% | Reduced |
| Atlas Capital Advisors LLC | 418 | $9.89K | 0.00% | +48+13.0% | Added |
| Murphy & Mullick Capital Management Corp | 376 | $9.39K | 0.01% | +24+6.8% | Added |
| Colonial Trust Advisors | 373 | $8.81K | 0.00% | +71+23.5% | Added |
| Optimum Investment Advisors | 372 | $8.78K | 0.00% | −129−25.7% | Reduced |
| Chesapeake Asset Management LLC | 369 | $8.71K | 0.01% | −181−32.9% | Reduced |
| Winch Advisory Services, LLC | 365 | $8.62K | 0.00% | −175−32.4% | Reduced |
| LRI Investments, LLC | 332 | $7.84K | 0.00% | +19+6.1% | Added |
| CoreCap Advisors, LLC | 322 | $7.60K | 0.00% | +20+6.6% | Added |
| Moisand Fitzgerald Tamayo, LLC | 314 | $7.41K | 0.00% | +314 | New |
| Bank of Jackson Hole Trust | 311 | $7.34K | 0.00% | −858−73.4% | Reduced |
| Rakuten Securities, Inc. | 308 | $7.27K | 0.00% | +238+340.0% | Added |
| Parvin Asset Management, LLC | 293 | $6.92K | 0.01% | +18+6.5% | Added |
| Larson Financial Group LLC | 290 | $6.85K | 0.00% | −225−43.7% | Reduced |
| IFP Advisors, Inc | 289 | $6.82K | 0.00% | −187−39.3% | Reduced |
| Rossby Financial, LCC | 288 | $6.80K | 0.00% | +16+5.9% | Added |
| Glen Eagle Advisors, LLC | 286 | $6.75K | 0.00% | −27−8.6% | Reduced |
| Harbour Investments, Inc. | 279 | $6.59K | 0.00% | +251+896.4% | Added |
| Deseret Mutual Benefit Administrators | 274 | $6.47K | 0.00% | +14+5.4% | Added |
| Oakworth Capital, Inc. | 271 | $6.40K | 0.00% | +14+5.4% | Added |
| Gen-Wealth Partners Inc | 271 | $6.40K | 0.00% | +15+5.9% | Added |
| Huntington National Bank | 268 | $6.33K | 0.00% | −999−78.8% | Reduced |
| Union Bancaire Privee, UBP SA | 266 | $5.55K | 0.00% | +266 | New |
| Contravisory Investment Management, Inc. | 233 | $5.50K | 0.00% | −917−79.7% | Reduced |
| DT Investment Partners, LLC | 230 | $5.43K | 0.00% | +12+5.5% | Added |
| Financial Management Professionals, Inc. | 228 | $5.38K | 0.00% | +13+6.0% | Added |
| Perkins Coie Trust Co | 219 | $5.17K | 0.00% | +8+3.8% | Added |
| Old Second National Bank of Aurora | 212 | $5.00K | 0.00% | +12+6.0% | Added |
| Bellevue Asset Management, LLC | 197 | $4.65K | 0.00% | +11+5.9% | Added |
| Massmutual Trust Co FSB | 195 | $4.60K | 0.00% | +21+12.1% | Added |
| Sachetta, LLC | 194 | $4.58K | 0.00% | +171+743.5% | Added |
| Medallion Wealth Advisors, LLC | 180 | $4.25K | 0.00% | +10+5.9% | Added |
| Farmers & Merchants Investments Inc | 176 | $4.16K | 0.00% | +37+26.6% | Added |
| Versant Capital Management, Inc | 174 | $4.11K | 0.00% | +108+163.6% | Added |
| Cromwell Holdings LLC | 171 | $4.04K | 0.00% | −120−41.2% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 170 | $4.01K | 0.00% | +9+5.6% | Added |
| Harbor Capital Advisors, Inc. | 170 | $4.00K | 0.00% | +170 | New |
| Golden State Wealth Management, LLC | 166 | $3.92K | 0.00% | +8+5.1% | Added |
| TD Private Client Wealth LLC | 166 | $3.92K | 0.00% | −15−8.3% | Reduced |
| Atlantic Edge Private Wealth Management, LLC | 164 | $3.87K | 0.00% | +9+5.8% | Added |
| Louisbourg Investments Inc. | 155 | $3.66K | 0.00% | +155 | New |
| GPS Wealth Strategies Group, LLC | 143 | $3.38K | 0.00% | +5+3.6% | Added |
| Ramirez Asset Management, Inc. | 142 | $3.35K | 0.00% | +42+42.0% | Added |
| Union Savings Bank | 134 | $3.34K | 0.00% | +9+7.2% | Added |
| Rothschild Investment LLC | 141 | $3.33K | 0.00% | +66+88.0% | Added |
| NBT Bank N A | 138 | $3.26K | 0.00% | −637−82.2% | Reduced |
| McIlrath & Eck, LLC | 136 | $3.21K | 0.00% | +6+4.6% | Added |
| South Plains Financial, Inc. | 136 | $3.20K | 0.00% | +136 | New |
| ORG Partners LLC | 130 | $3.11K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 128 | $3.02K | 0.00% | +128 | New |
| Hemington Wealth Management | 135 | $3.00K | 0.00% | +5+3.8% | Added |
| NBC Securities, Inc. | 161 | $3.00K | 0.00% | +91+130.0% | Added |
| Virtus ETF Advisers LLC | 121 | $2.86K | 0.00% | +121 | New |
| Roxbury Financial LLC | 118 | $2.79K | 0.00% | +6+5.4% | Added |
| Horizon Investments, LLC | 113 | $2.67K | 0.00% | +113 | New |
| Geneos Wealth Management Inc. | 111 | $2.62K | 0.00% | +3+2.8% | Added |
| Grove Bank & Trust | 108 | $2.55K | 0.00% | +19+21.3% | Added |
| Kozak & Associates, Inc. | 105 | $2.53K | 0.00% | +6+6.1% | Added |
| Godsey & Gibb Associates | 106 | $2.50K | 0.00% | +6+6.0% | Added |
| Harbor Investment Advisory, LLC | 106 | $2.50K | 0.00% | +6+6.0% | Added |
| Private Wealth Management Group, LLC | 106 | $2.50K | 0.00% | +106 | New |
| Evermay Wealth Management LLC | 99 | $2.34K | 0.00% | −501−83.5% | Reduced |
| Rosenberg Matthew Hamilton | 99 | $2.34K | 0.00% | +5+5.3% | Added |
| Hilltop National Bank | 98 | $2.31K | 0.00% | +98 | New |
| Asset Dedication, LLC | 92 | $2.17K | 0.00% | +12+15.0% | Added |
| Bell Investment Advisors, Inc | 89 | $2.10K | 0.00% | +59+196.7% | Added |
| Anchor Investment Management, LLC | 87 | $2.05K | 0.00% | −438−83.4% | Reduced |
| Capital Analysts, LLC | 78 | $2.00K | 0.00% | +1+1.3% | Added |
| Centerpoint Advisors, LLC | 69 | $2.00K | 0.00% | +69 | New |
| Aventus Investment Advisors, Inc. | 83 | $1.96K | 0.00% | +83 | New |
| First Financial Corp | 79 | $1.86K | 0.00% | 00.0% | Unchanged |
| Minot DeBlois Advisors LLC | 79 | $1.86K | 0.00% | +4+5.3% | Added |
| Missouri Trust & Investment Co | 79 | $1.86K | 0.00% | +4+5.3% | Added |
| Hughes Financial Services, LLC | 68 | $1.75K | 0.00% | +3+4.6% | Added |
| Eastern Bank | 68 | $1.61K | 0.00% | −1,027−93.8% | Reduced |
| Assetmark, Inc | 67 | $1.58K | 0.00% | +66+6,600.0% | Added |
| True Wealth Design, LLC | 66 | $1.56K | 0.00% | +63+2,100.0% | Added |
| High Note Wealth, LLC | 63 | $1.49K | 0.00% | +3+5.0% | Added |
| SBI Securities Co., Ltd. | 56 | $1.32K | 0.00% | +27+93.1% | Added |
| Montag A & Associates Inc | 55 | $1.30K | 0.00% | +55 | New |