Constellium market cap CSTM
Share price times shares outstanding: what the whole company sells for, since 2018.
- Today, Oct 23, 2026
- $3.1B
- Highest close in our data
- $4.8B
- Jun 2026
Constellium is worth $3.1B at the close on Oct 23, 2026, at $23.22 a share.
That is up 33% over the last year and up 22% over five years.
Its highest close in our data was $4.8B in Jun 2026.
Market cap over time
Year by year
| Year | End of year | Low | High | Change |
|---|---|---|---|---|
| 2026 so far | $3.1B | $2.7B | $4.8B | +21% |
| 2025 | $2.6B | $1.2B | $2.6B | +75% |
| 2024 | $1.5B | $1.5B | $3.3B | −48% |
| 2023 | $2.9B | $1.9B | $2.9B | +72% |
| 2022 | $1.7B | $1.4B | $2.7B | −33% |
| 2021 | $2.5B | $1.7B | $2.9B | +30% |
| 2020 | $1.9B | $569.4M | $2B | +4% |
| 2019 | $1.9B | $981.9M | $2B | +101% |
| 2018 | $925.4M | $912M | $1.7B | n/a |
Against its peers
Companies in Steel nearest Constellium's size, closest first, today.
| Company | Market cap |
|---|---|
| CSTMConstellium | $3.1B |
| WORWorthington Enterprises | $3.1B |
| MTUSMetallus | $846M |
| CRSCarpenter Technology | $14.1B |
| IIINInsteel Industries | $537.6M |
| RSReliance Steel & Aluminum | $21.2B |
| Peer median | $3.1B |
What the market cap tells you
Share price times shares outstanding: what the whole company sells for today.
Size, not quality. Large caps move slower and are covered more. That is all it tells you.
More on Constellium
Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.