Security record · archived quarter
CSTM
Constellium SE · Basic Materials · Aluminum
16Tracked holders
-1Δ holders
45.31MShares held
$602.65MReported value
+0New positions
−1Exits
Momentum inputs (comparable managers):
holder breadth -5.9% ·
share flow +2.8% ·
net new positions -6.2%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 121 | +16 | 73.58M | $2.32B | +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 | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 13.86M | — | $184.29M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | Fidelity (FMR) ✦ | 13.81M | — | $183.71M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | Fidelity (FMR) ✦ | 13.81M | — | $183.71M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Fidelity (FMR) ✦ | 13.81M | — | $183.71M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | Millennium Management ✦ | 5.12M | +24.5% | $68.13M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 21 | State Street Global Advisors ✦ (passive) | 2.50M | +12.7% | $33.29M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 22 | The Vanguard Group ✦ (passive) | 2.36M | — | $31.40M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | The Vanguard Group ✦ (passive) | 2.36M | — | $31.40M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | The Vanguard Group ✦ (passive) | 2.36M | — | $31.40M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | The Vanguard Group ✦ (passive) | 2.36M | — | $31.40M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | The Vanguard Group ✦ (passive) | 2.36M | — | $31.40M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | D. E. Shaw & Co. ✦ | 2.28M | -23.1% | $30.31M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 28 | D. E. Shaw & Co. ✦ | 2.28M | -23.1% | $30.31M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 29 | Geode Capital Management ✦ (passive) | 1.73M | +14.2% | $23.01M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 30 | Geode Capital Management ✦ (passive) | 1.73M | +14.2% | $23.01M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 31 | Arrowstreet Capital ✦ | 920.97K | +170.4% | $12.25M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 32 | Point72 Asset Management ✦ | 623.69K | +26.3% | $8.30M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 33 | T. Rowe Price ✦ | 591.31K | -1.7% | $7.87M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 34 | T. Rowe Price ✦ | 591.31K | -1.7% | $7.87M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 35 | Marshall Wace ✦ | 406.88K | +64.1% | $5.41M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Marshall Wace ✦ | 406.88K | +64.1% | $5.41M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Marshall Wace ✦ | 406.88K | +64.1% | $5.41M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | AQR Capital Management ✦ | 383.08K | +318.4% | $5.10M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 39 | AQR Capital Management ✦ | 383.08K | +318.4% | $5.10M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 40 | AQR Capital Management ✦ | 383.08K | +318.4% | $5.10M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 41 | AQR Capital Management ✦ | 383.08K | +318.4% | $5.10M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 42 | AQR Capital Management ✦ | 383.08K | +318.4% | $5.10M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 43 | Wellington Management ✦ | 328.34K | -3.3% | $4.37M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 44 | Wellington Management ✦ | 328.34K | -3.3% | $4.37M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 45 | Wellington Management ✦ | 328.34K | -3.3% | $4.37M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 46 | Wellington Management ✦ | 328.34K | -3.3% | $4.37M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 47 | Citadel Advisors ✦ | 174.47K | -36.5% | $2.32M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 48 | Norges Bank ✦ (passive) | 112.72K | -48.1% | $1.50M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 49 | Renaissance Technologies ✦ | 106.10K | -40.2% | $1.41M | 0.0% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Adage Capital Partners | $4.45M | 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.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
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: Q2 2025 ·
Methodology ·
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