Security record · archived quarter
AMTM
Amentum Holdings, Inc. · Industrials · Aerospace & Defense
114Tracked holders
+3Δ holders
114.62MShares held
$3.32BReported value
+4New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +2.7% ·
share flow -0.9% ·
net new positions +3.5%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 108 | -3 | 117.14M | $2.42B | +7 | −10 |
| Q1 2026 | 114 | +1 | 111.17M | $2.90B | +6 | −6 |
| Q4 2025 | 114 | +3 | 114.62M | $3.32B | +4 | — |
| Q3 2025 | 18 | 0 | 67.20M | $1.61B | +1 | −2 |
| Q2 2025 | 16 | +3 | 69.96M | $1.65B | +4 | −1 |
| Q1 2025 | 10 | -3 | 25.91M | $471.64M | +2 | −5 |
| Q4 2024 | 13 | -2 | 20.67M | $434.75M | +2 | −4 |
| Q3 2024 | 14 | +14 | 12.37M | $393.08M | +14 | — |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Invesco Ltd. | 21.83M | — | $633.19M | 0.1% | n/c | 1 | SEC ↗ ×10 |
| 2 | BlackRock ✦ (passive) | 17.46M | -3.0% | $506.31M | 0.0% | ▼ Trim | 3 | SEC ↗ ×14 |
| 3 | The Vanguard Group ✦ (passive) | 15.41M | -0.9% | $446.94M | 0.0% | ▼ Trim | 3 | SEC ↗ ×5 |
| 4 | PRIMECAP Management ✦ | 12.13M | +1.8% | $351.68M | 0.3% | ▲ Add | 6 | SEC ↗ |
| 5 | Fidelity (FMR) ✦ | 6.71M | +7.6% | $194.51M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 6 | State Street Global Advisors ✦ (passive) | 5.06M | -25.9% | $146.79M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 7 | Focus Partners Wealth | 2.79M | — | $81.04M | 0.1% | n/c | 1 | SEC ↗ |
| 8 | Geode Capital Management ✦ (passive) | 2.66M | +0.2% | $77.15M | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
| 9 | Norges Bank ✦ (passive) | 2.29M | New | $66.53M | 0.0% | New | 1 | SEC ↗ |
| 10 | Morgan Stanley ✦ | 2.08M | +14.9% | $60.19M | 0.0% | ▲ Add | 2 | SEC ↗ ×14 |
| 11 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 1.96M | — | $56.90M | 0.1% | n/c | 1 | SEC ↗ ×2 |
| 12 | Charles Schwab Investment… | 1.95M | — | $56.61M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Dimensional Fund Advisors Lp | 1.83M | — | $53.16M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 14 | AQR Capital Management ✦ | 1.45M | +778.9% | $42.11M | 0.0% | ▲ Add | 3 | SEC ↗ ×7 |
| 15 | FIL Ltd | 1.43M | — | $41.45M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | Bank Of America Corp /De/ | 1.16M | — | $33.57M | 0.0% | n/c | 1 | SEC ↗ ×8 |
| 17 | Voya Investment Management Llc | 1.15M | — | $33.28M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 18 | Loomis Sayles & Co L P | 1.12M | — | $32.45M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 19 | Northern Trust Corp | 952.98K | — | $27.64M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 20 | Bank of New York Mellon Corp | 922.10K | — | $26.74M | 0.0% | n/c | 1 | SEC ↗ ×12 |
| 21 | Nuveen, LLC | 813.77K | — | $23.60M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 22 | Principal Financial Group Inc | 728.41K | — | $21.12M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 23 | Point72 Asset Management ✦ | 695.29K | -49.6% | $20.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 24 | Goldman Sachs Group ✦ | 644.16K | -20.7% | $18.68M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 25 | Two Sigma Investments ✦ | 637.99K | +59.9% | $18.50M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 26 | Gotham Asset Management ✦ | 635.43K | +159.5% | $18.43M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 27 | New York State Common Retirement… | 535.22K | — | $15.52M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Wells Fargo & Company/Mn | 464.74K | — | $13.48M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 29 | Russell Investments Group, Ltd. | 437.02K | — | $12.67M | 0.0% | n/c | 1 | SEC ↗ ×8 |
| 30 | First Trust Advisors Lp | 377.83K | — | $10.96M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Legal & General Group Plc | 368.61K | — | $10.69M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 32 | Ameriprise Financial Inc | 338.60K | — | $9.82M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 33 | Swiss National Bank | 311.79K | — | $9.04M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Rhumbline Advisers | 291.44K | — | $8.45M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | California Public Employees… | 278.64K | — | $8.08M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Hotchkis & Wiley Capital Management… | 268.38K | — | $7.78M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Balyasny Asset Management L.P. | 268.00K | — | $7.77M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Royal Bank Of Canada | 266.54K | — | $7.73M | 0.0% | n/c | 1 | SEC ↗ ×8 |
| 39 | UBS AM, a distinct business unit of… | 253.02K | — | $7.34M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 40 | Sei Investments Co | 217.04K | — | $6.29M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 41 | UBS Group AG | 206.10K | — | $5.98M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 42 | Wealth Enhancement Advisory… | 155.78K | — | $4.91M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Raymond James Financial Inc | 168.04K | — | $4.87M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 44 | California State Teachers… | 149.91K | — | $4.35M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | Qube Research & Technologies Ltd | 146.18K | — | $4.24M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Prudential Financial Inc | 142.42K | — | $4.13M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | T. Rowe Price ✦ | 129.48K | +9.6% | $3.76M | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
| 48 | State Board Of Administration Of… | 120.86K | — | $3.51M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Soros Fund Management ✦ | 109.30K | New | $3.17M | 0.1% | New | 1 | SEC ↗ |
| 50 | State Of Wisconsin Investment Board | 103.68K | — | $3.01M | 0.0% | n/c | 1 | SEC ↗ |
| 51 | GAMCO Investors ✦ | 91.86K | -7.8% | $2.66M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 52 | JPMorgan Chase ✦ | 89.29K | -57.4% | $2.59M | 0.0% | ▼ Trim | 2 | SEC ↗ ×9 |
| 53 | LPL Financial LLC | 86.68K | — | $2.51M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Blair William & Co/Il | 79.97K | — | $2.32M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Holocene Advisors, LP | 79.32K | — | $2.30M | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Citigroup Inc | 79.01K | — | $2.29M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 57 | Quantinno Capital Management LP | 77.97K | — | $2.26M | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Corient Private Wealth LP | 73.82K | — | $2.15M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 59 | Alliancebernstein L.P. | 71.27K | — | $2.07M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Janus Henderson Group Plc | 69.40K | — | $2.01M | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Envestnet Asset Management Inc | 67.70K | — | $1.96M | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Millennium Management ✦ | 61.19K | -90.5% | $1.77M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 63 | Citadel Advisors ✦ | 55.59K | -52.9% | $1.61M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 64 | Cerity Partners LLC | 51.69K | — | $1.50M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 65 | Barclays Plc | 50.38K | — | $1.46M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 66 | Mariner, LLC | 48.84K | — | $1.42M | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Victory Capital Management Inc | 47.00K | — | $1.36M | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Creative Planning | 44.83K | — | $1.30M | 0.0% | n/c | 1 | SEC ↗ |
| 69 | Cwm, Llc | 44.61K | — | $1.29M | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Manufacturers Life Insurance… | 36.92K | — | $1.07M | 0.0% | n/c | 1 | SEC ↗ |
| 71 | Jones Financial Companies Lllp | 36.28K | — | $1.05M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 72 | Marshall Wace ✦ | 35.08K | New | $1.02M | 0.0% | New | 1 | SEC ↗ ×2 |
| 73 | Tidal Investments LLC | 33.96K | — | $984,869 | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Zurcher Kantonalbank (Zurich… | 33.44K | — | $969,702 | 0.0% | n/c | 1 | SEC ↗ |
| 75 | Universal- Beteiligungs- und… | 33.22K | — | $963,496 | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Canada Pension Plan Investment Board | 32.99K | — | $956,826 | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Captrust Financial Advisors | 31.93K | — | $926,115 | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Stifel Financial Corp | 30.55K | — | $886,036 | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 79 | Osaic Holdings, Inc. | 29.13K | — | $844,654 | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 80 | Group One Trading Llc | 28.50K | — | $826,442 | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Us Bancorp \De\ | 25.60K | — | $742,400 | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 82 | Pictet Asset Management Holding SA | 25.25K | — | $732,308 | 0.0% | n/c | 1 | SEC ↗ |
| 83 | Cetera Investment Advisers | 21.27K | — | $616,946 | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Deutsche Bank Ag\ | 21.18K | — | $614,075 | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 85 | Bank Of Montreal /Can/ | 19.41K | — | $562,861 | 0.0% | n/c | 1 | SEC ↗ ×8 |
| 86 | Wellington Management ✦ | 18.95K | -3.8% | $549,492 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 87 | CIBC Asset Management Inc | 18.89K | — | $547,694 | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Neuberger Berman Group LLC | 18.87K | — | $547,346 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 89 | Truist Financial Corp | 18.52K | — | $537,095 | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 90 | Bridgewater Associates ✦ | 18.25K | New | $529,279 | 0.0% | New | 1 | SEC ↗ |
| 91 | Commonwealth Equity Services, Llc | 16.51K | — | $478,829 | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Mackenzie Financial Corp | 15.48K | — | $452,642 | 0.0% | n/c | 1 | SEC ↗ |
| 93 | Mercer Global Advisors Inc /Adv | 15.50K | — | $452,632 | 0.0% | n/c | 1 | SEC ↗ |
| 94 | HighTower Advisors, LLC | 14.64K | — | $424,552 | 0.0% | n/c | 1 | SEC ↗ |
| 95 | First Manhattan Co. Llc. | 14.12K | — | $409,393 | 0.0% | n/c | 1 | SEC ↗ |
| 96 | Pnc Financial Services Group, Inc. | 12.62K | — | $366,067 | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 97 | Franklin Resources Inc | 11.93K | — | $346,045 | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 98 | Jane Street Group, Llc | 10.81K | — | $313,461 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 99 | Grantham, Mayo, Van Otterloo & Co.… | 10.46K | — | $303,253 | 0.0% | n/c | 1 | SEC ↗ |
| 100 | Brown Advisory Inc | 9.95K | — | $288,521 | 0.0% | n/c | 1 | SEC ↗ ×2 |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $66.53M | 0.0% |
| Soros Fund Management | $3.17M | 0.1% |
| Marshall Wace | $1.02M | 0.0% |
| Bridgewater Associates | $529,279 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 482 holders, 210.87M shares, $5.10B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Aug 06
SC 13G — PRIMECAP MANAGEMENT CO/CA/
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q4 2025 ·
Methodology ·
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