AMTM
Amentum Holdings, Inc. · Industrials · Aerospace & Defense
Momentum inputs (comparable managers):
holder breadth -13.3% ·
share flow +9.8% ·
net new positions -15.4%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 109 | -3 | 117.16M | $2.42B | +7 | −9 |
| 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 | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 6.45M | — | $135.73M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | PRIMECAP Management ✦ | 6.41M | +21.7% | $134.89M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 3 | Wellington Management ✦ | 2.33M | +149.5% | $49.07M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | Wellington Management ✦ | 2.33M | +149.5% | $49.07M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 1.96M | -37.6% | $41.30M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | Geode Capital Management ✦ (passive) | 1.96M | -37.6% | $41.30M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | Norges Bank ✦ (passive) | 1.44M | New | $30.29M | 0.0% | New | 1 | SEC ↗ |
| 8 | Millennium Management ✦ | 1.20M | +78.1% | $25.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 9 | Citadel Advisors ✦ | 394.82K | -17.9% | $8.30M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 394.82K | -17.9% | $8.30M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | Point72 Asset Management ✦ | 126.38K | +2003.2% | $2.66M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 12 | D. E. Shaw & Co. ✦ | 119.94K | +38.8% | $2.52M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 84.36K | -86.8% | $1.77M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 84.36K | -86.8% | $1.77M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | Arrowstreet Capital ✦ | 71.95K | New | $1.51M | 0.0% | New | 1 | SEC ↗ |
| 16 | T. Rowe Price ✦ | 62.13K | -64.4% | $1.31M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 17 | Renaissance Technologies ✦ | 11.00K | -97.5% | $231,330 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $30.29M | 0.0% |
| Arrowstreet Capital | $1.51M | 0.0% |
Exited
| Two Sigma Investments | $10.36M | was 0.0% |
| Adage Capital Partners | $3.81M | was 0.0% |
| Bridgewater Associates | $1.57M | was 0.0% |
| Soros Fund Management | $870,782 | 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.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.