Constellium SE
CSTM · NYSE
$25.76+$0.52 (+2.06%)TodayMarket closed ·
Prev close $25.24
Who owns CSTM
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 31.2% of CSTM’s shares.
- Bpifrance SA6.2%
- BlackRock Institutional Trust Company, N.A.6.0%
- Vanguard Portfolio Management, LLC3.2%
- American Century Investment Management, Inc.3.1%
- Next 6 largest institutions12.7%
- All other shareholders68.8%
| Holder | Shares | % of shares |
|---|---|---|
| Bpifrance SA | 8.40M | 6.20% |
| BlackRock Institutional Trust Company, N.A. | 8.10M | 5.98% |
| Vanguard Portfolio Management, LLC | 4.39M | 3.24% |
| American Century Investment Management, Inc. | 4.22M | 3.11% |
| T. Rowe Price Investment Management, Inc. | 2.98M | 2.20% |
| State Street Investment Management (US) | 2.95M | 2.18% |
| BlackRock Financial Management, Inc. | 2.95M | 2.18% |
| Morgan Stanley & Co. International Plc | 2.85M | 2.10% |
| Arrowstreet Capital, Limited Partnership | 2.84M | 2.10% |
| Nuveen LLC | 2.62M | 1.93% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Russell 2000 ETF | 3.50M | 2.58% |
| Avantis International Small Cap Value ETF | 2.42M | 1.78% |
| T. Rowe Price Small Cap Value Fund | 1.54M | 1.14% |
| Fidelity Small Cap Index Fund | 1.47M | 1.08% |
| BlackRock Funds II - BlackRock High Yield Bond Portfolio | 1.46M | 1.08% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $166.43K (3 trades) and sold $6.37M (11 trades) of CSTM on the open market.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Deslarzes Jean-Christophe | Buy | 1.49K | $40.59K |
| Joerg Ingrid | Tax withholding | 2.98K | $87.37K |
| Ormerod John | Sale | 8.00K | $280.08K |
| Becker Marcus | Sale | 10.39K | $362.96K |
| Jarrett Martin | Sale | 4.72K | $157.80K |
| Soultz Bradley Lee | Buy | 2.50K | $84.60K |
| Piquier Ludovic | Sale | 1.00K | $33.57K |
| Brun Nicolas | Sale | 26.66K | $902.47K |
| Corre Stephane | Sale | 5.00K | $167.60K |
| Guo Jack Q. | Sale | 25.20K | $822.06K |
Short interest
Settled Sep 30, 2026
- Shares short
- 6.25M
- Days to cover
- 3.48
- % of shares outstanding
- 4.61%
- Average daily volume
- 1.80M
- Change since last report
- −12.0%
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