Constellium SE Class A Ordinary shares (CSTM) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for CSTM. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 374 institutions reported holding CSTM, with 119.3 million shares worth $3.8 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| BlackRock | 12,802,322 | $408M | DECREASED |
| Bpifrance | 8,403,903 | $268M | DECREASED |
| Morgan Stanley | 6,183,255 | $197M | INCREASED |
| Vanguard | 4,797,721 | $153M | INCREASED |
| American Century Companies | 4,220,743 | $135M | INCREASED |
Recent Insider Trades
| Insider | Type | Shares | Value | Date |
|---|---|---|---|---|
| Jean-Christophe Deslarzes (Director) | BUY | 1,800 | $42K | 2026-11-02 |
Full institutional holdings, insider history, and congressional trades for Constellium SE Class A Ordinary shares on SentiSense.