Security record · archived quarter
AMTM
Amentum Holdings, Inc. · Industrials · Aerospace & Defense
114Tracked holders
+1Δ holders
111.17MShares held
$2.90BReported value
+6New positions
−6Exits
Momentum inputs (comparable managers):
holder breadth +0.9% ·
share flow +7.3% ·
net new positions 0.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
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 · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Invesco Ltd. | 21.47M | -1.6% | $560.04M | 0.1% | ▼ Trim | 2 | SEC ↗ ×10 |
| 2 | BlackRock ✦ (passive) | 17.84M | +2.2% | $465.30M | 0.0% | ▲ Add | 4 | SEC ↗ ×14 |
| 3 | PRIMECAP Management ✦ | 12.09M | -0.3% | $315.18M | 0.2% | ▼ Trim | 7 | SEC ↗ |
| 4 | Vanguard Capital Management Llc | 6.65M | — | $173.45M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Fidelity (FMR) ✦ | 5.58M | -16.8% | $145.48M | 0.0% | ▼ Trim | 4 | SEC ↗ ×4 |
| 6 | State Street Global Advisors ✦ (passive) | 5.08M | +0.3% | $132.46M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 7 | Dimensional Fund Advisors Lp | 3.79M | +106.6% | $98.77M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 8 | Geode Capital Management ✦ (passive) | 2.81M | +5.8% | $73.42M | 0.0% | ▲ Add | 7 | SEC ↗ ×2 |
| 9 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 2.79M | +42.0% | $72.64M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 10 | Focus Partners Wealth | 2.60M | -6.8% | $67.94M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 11 | Bank Of America Corp /De/ | 2.41M | +107.8% | $62.72M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 12 | Morgan Stanley ✦ | 2.23M | +7.7% | $58.29M | 0.0% | ▲ Add | 3 | SEC ↗ ×13 |
| 13 | Charles Schwab Investment… | 2.07M | +5.9% | $53.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | UBS Group AG | 1.71M | +730.1% | $44.62M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 15 | Point72 Asset Management ✦ | 1.63M | +134.5% | $42.53M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 16 | Toronto Dominion Bank | 1.57M | New | $40.82M | 0.1% | New | 1 | SEC ↗ ×3 |
| 17 | Voya Investment Management Llc | 1.20M | +4.5% | $31.28M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 18 | Goldman Sachs Group ✦ | 1.13M | +75.7% | $29.51M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 19 | Loomis Sayles & Co L P | 1.08M | -3.4% | $28.20M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 20 | Northern Trust Corp | 984.11K | +3.3% | $25.67M | 0.0% | ▲ Add | 2 | SEC ↗ ×6 |
| 21 | Bank of New York Mellon Corp | 908.60K | -1.5% | $23.70M | 0.0% | ▼ Trim | 2 | SEC ↗ ×13 |
| 22 | Two Sigma Investments ✦ | 900.18K | +41.1% | $23.48M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 23 | Nuveen, LLC | 871.79K | +7.1% | $22.74M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 24 | Principal Financial Group Inc | 744.73K | +2.2% | $19.42M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 25 | Russell Investments Group, Ltd. | 713.83K | +63.3% | $18.62M | 0.0% | ▲ Add | 2 | SEC ↗ ×7 |
| 26 | FIL Ltd | 652.16K | -54.4% | $17.01M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | Wells Fargo & Company/Mn | 636.67K | +37.0% | $16.60M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 28 | Millennium Management ✦ | 631.05K | +931.4% | $16.46M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 29 | Gotham Asset Management ✦ | 521.04K | -18.0% | $13.59M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 30 | AQR Capital Management ✦ | 507.84K | -65.0% | $13.17M | 0.0% | ▼ Trim | 4 | SEC ↗ ×8 |
| 31 | New York State Common Retirement… | 502.49K | -6.1% | $13.10M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 32 | Legal & General Group Plc | 334.90K | -9.2% | $8.73M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 33 | Hotchkis & Wiley Capital Management… | 333.80K | +24.4% | $8.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 34 | Susquehanna International Group, Llp | 330.05K | New | $8.61M | 0.0% | New | 1 | SEC ↗ |
| 35 | Ameriprise Financial Inc | 329.75K | -2.6% | $8.60M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 36 | Swiss National Bank | 313.39K | +0.5% | $8.17M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Rhumbline Advisers | 300.29K | +3.0% | $7.83M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | Sei Investments Co | 294.67K | +35.8% | $7.69M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 39 | California Public Employees… | 277.05K | -0.6% | $7.23M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 40 | Fifth Third Bancorp | 273.32K | +10456.8% | $7.13M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | UBS AM, a distinct business unit of… | 247.96K | -2.0% | $6.47M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 42 | Raymond James Financial Inc | 245.82K | +46.3% | $6.41M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 43 | Royal Bank Of Canada | 231.74K | -13.1% | $6.04M | 0.0% | ▼ Trim | 2 | SEC ↗ ×8 |
| 44 | First Trust Advisors Lp | 228.08K | -39.6% | $5.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 45 | Jane Street Group, Llc | 191.98K | +1676.1% | $5.01M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 46 | California State Teachers… | 184.56K | +23.1% | $4.81M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Quantinno Capital Management LP | 145.57K | +86.7% | $3.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 48 | T. Rowe Price ✦ | 145.25K | +12.2% | $3.79M | 0.0% | ▲ Add | 7 | SEC ↗ ×2 |
| 49 | Prudential Financial Inc | 140.43K | -1.4% | $3.66M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 50 | Holocene Advisors, LP | 123.20K | +55.3% | $3.21M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | State Board Of Administration Of… | 120.86K | 0.0% | $3.15M | 0.0% | Held | 2 | SEC ↗ |
| 52 | Soros Fund Management ✦ | 107.61K | -1.6% | $2.81M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 53 | State Of Wisconsin Investment Board | 101.98K | -1.6% | $2.66M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 54 | GAMCO Investors ✦ | 95.33K | +3.8% | $2.49M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 55 | LPL Financial LLC | 88.80K | +2.5% | $2.32M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 56 | Wealth Enhancement Advisory… | 79.16K | -49.2% | $2.14M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 57 | Alliancebernstein L.P. | 73.81K | +3.5% | $2.14M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 58 | JPMorgan Chase ✦ | 84.77K | -5.1% | $2.13M | 0.0% | ▼ Trim | 3 | SEC ↗ ×8 |
| 59 | Citadel Advisors ✦ | 80.64K | +45.1% | $2.10M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 60 | Qube Research & Technologies Ltd | 77.37K | -47.1% | $2.02M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 61 | Janus Henderson Group Plc | 69.40K | 0.0% | $1.81M | 0.0% | Held | 2 | SEC ↗ |
| 62 | D. E. Shaw & Co. ✦ | 66.17K | New | $1.73M | 0.0% | New | 1 | SEC ↗ ×2 |
| 63 | Creative Planning | 64.78K | +44.5% | $1.69M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | Envestnet Asset Management Inc | 61.61K | -9.0% | $1.61M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 65 | Lido Advisors, LLC | 50.34K | +411.2% | $1.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | Victory Capital Management Inc | 49.83K | +6.0% | $1.30M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Blair William & Co/Il | 49.30K | -38.4% | $1.29M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 68 | Barclays Plc | 46.81K | -7.1% | $1.22M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 69 | Cwm, Llc | 42.64K | -4.4% | $1.11M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 70 | Cerity Partners LLC | 42.45K | -17.9% | $1.11M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 71 | Zurcher Kantonalbank (Zurich… | 40.96K | +22.5% | $1.07M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Manufacturers Life Insurance… | 40.92K | +10.8% | $1.07M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Citigroup Inc | 40.67K | -48.5% | $1.06M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 74 | Jones Financial Companies Lllp | 37.68K | +3.8% | $973,558 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 75 | Universal- Beteiligungs- und… | 34.64K | +4.3% | $903,437 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 76 | Captrust Financial Advisors | 31.93K | 0.0% | $832,226 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 77 | Corient Private Wealth LP | 29.53K | -60.0% | $768,721 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 78 | Walleye Trading LLC | 28.55K | New | $744,532 | 0.0% | New | 1 | SEC ↗ |
| 79 | Osaic Holdings, Inc. | 27.06K | -7.1% | $705,757 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 80 | Pictet Asset Management Holding SA | 26.89K | +6.5% | $701,369 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 81 | Cetera Investment Advisers | 24.38K | +14.6% | $635,700 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 82 | Us Bancorp \De\ | 24.28K | -5.2% | $633,144 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 83 | Stifel Financial Corp | 21.93K | -28.2% | $572,074 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 84 | Neuberger Berman Group LLC | 20.55K | +8.9% | $535,970 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 85 | Bank Of Montreal /Can/ | 19.97K | +2.9% | $520,713 | 0.0% | ▲ Add | 2 | SEC ↗ ×8 |
| 86 | Deutsche Bank Ag\ | 19.85K | -6.2% | $517,791 | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 87 | HighTower Advisors, LLC | 18.61K | +27.1% | $485,414 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 88 | CIBC Asset Management Inc | 18.43K | -2.4% | $480,785 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | Balyasny Asset Management L.P. | 18.34K | -93.2% | $478,438 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 90 | Commonwealth Equity Services, Llc | 17.48K | +5.9% | $455,888 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 91 | Bridgewater Associates ✦ | 17.05K | -6.6% | $444,716 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 92 | Truist Financial Corp | 16.39K | -11.5% | $427,439 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 93 | Mackenzie Financial Corp | 16.27K | +5.1% | $424,322 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 94 | Mercer Global Advisors Inc /Adv | 15.47K | -0.2% | $403,566 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 95 | Tidal Investments LLC | 14.33K | -57.8% | $373,726 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 96 | First Manhattan Co. Llc. | 14.12K | 0.0% | $368,171 | 0.0% | Held | 2 | SEC ↗ |
| 97 | Pnc Financial Services Group, Inc. | 13.67K | +8.3% | $356,619 | 0.0% | ▲ Add | 2 | SEC ↗ ×6 |
| 98 | Franklin Resources Inc | 11.85K | -0.7% | $308,969 | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 99 | Canada Pension Plan Investment Board | 11.59K | -64.9% | $302,372 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 100 | National Bank Of Canada /Fi/ | 10.88K | +953.8% | $283,558 | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Toronto Dominion Bank | $40.82M | 0.1% |
| Susquehanna International… | $8.61M | 0.0% |
| D. E. Shaw & Co. | $1.73M | 0.0% |
| Walleye Trading LLC | $744,532 | 0.0% |
Exited
| Norges Bank | $66.53M | was 0.0% |
| Mariner, LLC | $1.42M | was 0.0% |
| Marshall Wace | $1.02M | was 0.0% |
| Group One Trading Llc | $826,442 | was 0.0% |
| Wellington Management | $549,492 | was 0.0% |
| Grantham, Mayo, Van Otterloo… | $303,253 | was 0.0% |
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: Q1 2026 ·
Methodology ·
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