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 |
|---|---|---|---|---|---|
| Armstrong Henry H Associates Inc | 17,081 | $310.9K | 0.03% | 00.0% | Unchanged |
| Security National Bank of Sioux City Iowa | 17,069 | $310.7K | 0.23% | +1,800+11.8% | Added |
| HighTower Advisors, LLC | 16,701 | $304.0K | 0.00% | +148+0.9% | Added |
| Paralel Advisors LLC | 16,329 | $297.2K | 0.01% | 00.0% | Unchanged |
| Neuberger Berman Group LLC | 16,153 | $294.0K | 0.00% | −5,168−24.2% | Reduced |
| First Manhattan Co | 16,009 | $291.4K | 0.00% | −1,593−9.1% | Reduced |
| Intrinsic Value Partners, LLC | 15,888 | $289.2K | 0.29% | −1,085−6.4% | Reduced |
| The PNC Financial Services Group, Inc. | 15,562 | $283.2K | 0.00% | −14,186−47.7% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 15,187 | $276.0K | 0.00% | −1,949−11.4% | Reduced |
| First Bank & Trust | 14,357 | $261.3K | 0.05% | +3,985+38.4% | Added |
| Walleye Capital LLC | 14,069 | $256.1K | 0.00% | +14,069 | New |
| Cahaba Wealth Management, Inc. | 13,643 | $248.3K | 0.02% | 00.0% | Unchanged |
| Stifel Financial Corp | 13,238 | $241.0K | 0.00% | −33,696−71.8% | Reduced |
| CIBC Asset Management Inc | 13,153 | $239.4K | 0.00% | +917+7.5% | Added |
| Clear Street Markets LLC | 13,062 | $237.7K | 0.16% | +13,062 | New |
| Shufro Rose & Co LLC | 13,034 | $237.2K | 0.02% | −610−4.5% | Reduced |
| Public Employees Retirement Association of Colorado | 12,768 | $232.0K | 0.00% | 00.0% | Unchanged |
| Rangeley Capital, LLC | 12,500 | $227.5K | 0.26% | −34,500−73.4% | Reduced |
| Evoke Wealth, LLC | 12,235 | $222.7K | 0.01% | +164+1.4% | Added |
| One68 Global Capital, LLC | 12,000 | $218.4K | 0.11% | +12,000 | New |
| BOK Financial Private Wealth, Inc. | 11,712 | $213.2K | 0.02% | +905+8.4% | Added |
| Quadrant Capital Group LLC | 11,669 | $212.4K | 0.01% | +11,545+9,310.5% | Added |
| Brown Advisory Inc | 11,665 | $212.3K | 0.00% | −2,025−14.8% | Reduced |
| Leavell Investment Management, Inc. | 11,614 | $211.4K | 0.01% | +11,614 | New |
| Lipe & Dalton | 11,374 | $207.0K | 0.12% | 00.0% | Unchanged |
| Prelude Capital Management, LLC | 11,360 | $206.8K | 0.02% | +11,360 | New |
| SFMG, LLC | 10,984 | $199.9K | 0.02% | 00.0% | Unchanged |
| Caldwell Investment Management Ltd. | 11,000 | $197.5K | 0.15% | 00.0% | Unchanged |
| Red Spruce Capital, LLC | 10,705 | $194.8K | 0.09% | −1,378−11.4% | Reduced |
| Virginia Retirement Systems Et Al | 10,700 | $194.7K | 0.00% | +10,700 | New |
| Lecap Asset Management Ltd | 10,437 | $190.0K | 0.04% | +10,437 | New |
| Lido Advisors, LLC | 10,396 | $189.2K | 0.00% | −2,697−20.6% | Reduced |
| Kentucky Retirement Systems | 10,112 | $184.0K | 0.01% | +10,112 | New |
| Tudor Investment Corp Et Al | 10,046 | $182.8K | 0.00% | +10,046 | New |
| Silvercrest Asset Management Group LLC | 10,000 | $182.0K | 0.00% | −280−2.7% | Reduced |
| Allworth Financial LP | 8,266 | $179.2K | 0.00% | +1,133+15.9% | Added |
| Sterling Capital Management LLC | 8,235 | $149.9K | 0.00% | +760+10.2% | Added |
| Toth Financial Advisory Corp | 8,024 | $146.0K | 0.02% | −10,170−55.9% | Reduced |
| Smithfield Trust Co | 7,856 | $141.0K | 0.01% | +380+5.1% | Added |
| Washington Trust Co | 7,541 | $137.2K | 0.01% | −1,587−17.4% | Reduced |
| KBC Group NV | 7,339 | $134.0K | 0.00% | +918+14.3% | Added |
| Intact Investment Management Inc. | 6,900 | $125.6K | 0.00% | −2,900−29.6% | Reduced |
| Legacy Bridge, LLC | 6,680 | $121.6K | 0.07% | −1,539−18.7% | Reduced |
| American National Bank | 6,400 | $116.5K | 0.01% | −88−1.4% | Reduced |
| Fortress Investment Group LLC | 6,287 | $114.4K | 0.02% | +6,287 | New |
| Corebridge Financial, Inc. | 5,630 | $102.5K | 0.00% | +352+6.7% | Added |
| CWM, LLC | 4,334 | $79.0K | 0.00% | −1,044−19.4% | Reduced |
| Whittier Trust Co | 4,266 | $77.6K | 0.00% | −252−5.6% | Reduced |
| CIBC Private Wealth Group, LLC | 4,603 | $75.6K | 0.00% | −3,036−39.7% | Reduced |
| MAI Capital Management | 3,791 | $69.0K | 0.00% | −810−17.6% | Reduced |
| Umb Bank N A | 3,691 | $67.2K | 0.00% | −4,405−54.4% | Reduced |
| EverSource Wealth Advisors, LLC | 3,666 | $66.7K | 0.00% | −312−7.8% | Reduced |
| GAMMA Investing LLC | 3,137 | $57.1K | 0.00% | +1,383+78.8% | Added |
| Farther Finance Advisors, LLC | 2,954 | $52.8K | 0.00% | +482+19.5% | Added |
| MetLife Investment Management | 2,663 | $48.5K | 0.00% | +382+16.7% | Added |
| Steward Partners Investment Advisory, LLC | 2,398 | $43.6K | 0.00% | −1,075−31.0% | Reduced |
| FNY Investment Advisers, LLC | 2,400 | $43.0K | 0.03% | +1,900+380.0% | Added |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 2,050 | $40.5K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 2,199 | $40.0K | 0.03% | +1,793+441.6% | Added |
| Fifth Third Bancorp | 2,195 | $39.9K | 0.00% | −1,931−46.8% | Reduced |
| Caldwell Trust Co | 2,018 | $36.7K | 0.00% | −1,460−42.0% | Reduced |
| Sandy Spring Bank | 2,004 | $36.5K | 0.00% | −1,577−44.0% | Reduced |
| Coldstream Capital Management Inc | 1,941 | $35.3K | 0.00% | +1,941 | New |
| Plante Moran Financial Advisors, LLC | 1,876 | $34.1K | 0.00% | 00.0% | Unchanged |
| Central Trust Co | 1,822 | $33.2K | 0.00% | −2,320−56.0% | Reduced |
| Federation des caisses Desjardins du Quebec | 1,797 | $32.7K | 0.00% | −343−16.0% | Reduced |
| Signaturefd, LLC | 1,764 | $32.1K | 0.00% | +916+108.0% | Added |
| Asset Planning,Inc | 1,690 | $30.8K | 0.02% | 00.0% | Unchanged |
| Quarry LP | 1,670 | $30.4K | 0.01% | +1,670 | New |
| Tower Research Capital LLC (TRC) | 1,543 | $28.1K | 0.00% | +753+95.3% | Added |
| Parallel Advisors, LLC | 1,416 | $25.8K | 0.00% | −168−10.6% | Reduced |
| Nomura Asset Management Co Ltd | 1,400 | $25.5K | 0.00% | +750+115.4% | Added |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 1,350 | $24.6K | 0.01% | +1,300+2,600.0% | Added |
| Toronto Dominion Bank | 1,338 | $24.4K | 0.00% | −8,662−86.6% | Reduced |
| Manchester Capital Management LLC | 1,327 | $24.2K | 0.00% | +27+2.1% | Added |
| Huntington National Bank | 1,267 | $23.1K | 0.00% | −171−11.9% | Reduced |
| Bank of Jackson Hole Trust | 1,169 | $23.0K | 0.01% | −2,596−69.0% | Reduced |
| National Bank of Canada | 1,240 | $22.6K | 0.00% | −960−43.6% | Reduced |
| HM Payson & Co | 1,179 | $21.5K | 0.00% | 00.0% | Unchanged |
| Contravisory Investment Management, Inc. | 1,150 | $20.9K | 0.00% | +1,150 | New |
| Brown Brothers Harriman & Co | 1,100 | $20.0K | 0.00% | −701−38.9% | Reduced |
| Bessemer Group Inc | 1,076 | $20.0K | 0.00% | −19−1.7% | Reduced |
| Eastern Bank | 1,095 | $19.9K | 0.00% | −3,007−73.3% | Reduced |
| Pinnacle Bancorp, Inc. | 1,086 | $19.8K | 0.01% | −888−45.0% | Reduced |
| Whittier Trust Co of Nevada Inc | 1,020 | $18.6K | 0.00% | −3−0.3% | Reduced |
| Thurston, Springer, Miller, Herd & Titak, Inc. | 1,011 | $18.4K | 0.00% | 00.0% | Unchanged |
| Spire Wealth Management | 987 | $18.0K | 0.00% | −52−5.0% | Reduced |
| Crews Bank & Trust | 852 | $15.5K | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 834 | $15.2K | 0.00% | −15−1.8% | Reduced |
| Quent Capital, LLC | 789 | $14.4K | 0.00% | 00.0% | Unchanged |
| NBT Bank N A | 775 | $14.1K | 0.00% | −2,226−74.2% | Reduced |
| Boston Private Wealth LLC | 669 | $12.2K | 0.00% | +669 | New |
| First Command Advisory Services, Inc. | 656 | $11.9K | 0.00% | 00.0% | Unchanged |
| Private Trust Co NA | 621 | $11.3K | 0.00% | −7−1.1% | Reduced |
| CX Institutional | 613 | $11.0K | 0.00% | +613 | New |
| Evermay Wealth Management LLC | 600 | $10.9K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 476 | $10.8K | 0.00% | −1,056−68.9% | Reduced |
| Northwestern Mutual Wealth Management Co | 585 | $10.6K | 0.00% | −2,880−83.1% | Reduced |
| GWM Advisors LLC | 565 | $10.3K | 0.00% | −102−15.3% | Reduced |
| Chesapeake Asset Management LLC | 550 | $10.0K | 0.01% | −14,123−96.3% | Reduced |