CSTM
Constellium SE · Basic Materials · Aluminum
Momentum inputs (comparable managers):
holder breadth +8.3% ·
share flow +10.7% ·
net new positions +7.7%
— formula
Broad accumulation — rising shares across more 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 | 121 | +16 | 74.13M | $2.35B | +18 | −1 |
| Q1 2026 | 107 | +9 | 74.07M | $1.80B | +16 | −7 |
| Q4 2025 | 98 | +2 | 74.01M | $1.40B | +3 | −1 |
| Q3 2025 | 17 | -1 | 56.48M | $840.42M | — | −2 |
| Q2 2025 | 16 | -1 | 45.31M | $602.65M | — | −1 |
| Q1 2025 | 14 | +1 | 14.04M | $141.64M | +1 | — |
| Q4 2024 | 13 | +1 | 11.63M | $119.45M | +2 | −1 |
| Q3 2024 | 11 | 0 | 8.19M | $133.25M | +1 | −1 |
| Q2 2024 | 11 | — | 7.79M | $146.77M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Millennium Management ✦ | 2.48M | +33.5% | $25.49M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 2 | D. E. Shaw & Co. ✦ | 2.43M | +112.2% | $24.92M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 3 | State Street Global Advisors ✦ (passive) | 2.31M | — | $23.77M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 1.48M | -0.6% | $15.22M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 5 | T. Rowe Price ✦ | 1.25M | -30.4% | $12.88M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 6 | Citadel Advisors ✦ | 453.04K | -16.7% | $4.65M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 7 | Norges Bank ✦ (passive) | 424.04K | -27.7% | $4.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 8 | Wellington Management ✦ | 338.88K | +0.1% | $3.48M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 9 | Adage Capital Partners ✦ | 298.77K | +70.7% | $3.07M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 10 | Renaissance Technologies ✦ | 75.50K | New | $775,385 | 0.0% | New | 1 | SEC ↗ |
| 11 | Arrowstreet Capital ✦ | 32.45K | New | $333,220 | 0.0% | New | 1 | SEC ↗ |
| 12 | Point72 Asset Management ✦ | 29.50K | -22.6% | $302,965 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 20.17K | -85.0% | $207,145 | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Renaissance Technologies | $775,385 | 0.0% |
| Arrowstreet Capital | $333,220 | 0.0% |
Exited
| Marshall Wace | $1.38M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 307 holders, 122.26M shares, $2.75B 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.