Constellium SE (CSTM) Institutional Ownership & Insider Trading
386 institutions reported holding Constellium SE shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 30 insider trades on Form 4 since 2025-10-01.
Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason
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- Market cap
- 3.1B
- P/E TTM
- 6.0
- Dividend yield
- —
- 52-week
- —
- Next earnings
- 28 Oct, in 4 days
Institutions · all 13F filers
quarter to 30 Jun 2026 · filers in both quarters386 institutions held 88.0% of the shares. Across filers that reported both quarters, shares held changed -4.2%.
Largest moves, shares (millions)
Institutional flow by quarter
net shares added or trimmed, millions · filers in both quarters| Quarter | Holders | Shares held, M | Change | Increased | New | Decreased | Closed |
|---|---|---|---|---|---|---|---|
| Jun 26 | 386 | 119 | -4.2% | 132 | 97 | 107 | 22 |
| Mar 26 | 308 | 124 | +0.2% | 107 | 70 | 79 | 19 |
| Dec 25 | 247 | 124 | -5.1% | 79 | 35 | 89 | 17 |
| Sep 25 | 230 | 130 | -1.2% | 92 | 33 | 63 | 19 |
| Jun 25 | 220 | 131 | -0.4% | 88 | 41 | 61 | 36 |
| Mar 25 | 219 | 131 | -3.5% | 93 | 29 | 62 | 28 |
| Dec 24 | 215 | 135 | -0.7% | 76 | 33 | 67 | 41 |
| Sep 24 | 219 | 135 | -2.2% | 81 | 33 | 68 | 36 |
Constellium SE — questions
- Who owns Constellium SE stock?
- 386 institutions reported Constellium SE shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (9.4%), Bpifrance SA (6.2%), MORGAN STANLEY (4.6%).
- Are Constellium SE insiders buying or selling?
- 30 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.
Every figure on this page comes from Constellium SE's own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.
How these figures are read: methodology · EquiReason.