CSTMConstellium SE
What is the market doing?
No clear lean: nothing decisive, though insiders net buying.
Rangebound, no clear trend. Price is −4% vs its 200-day average.
Insiders were net buyers over the 90 days ending Oct 8, 2026.
Moderately shorted, settled Sep 15, 2026, about a week of normal trading to cover. Up 2.5% since the previous count, up from 4.3% of shares outstanding three months ago.
Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.
How CSTM is trading
Constellium SE is +67% over the past year while the S&P 500 is +18%: 49 points ahead of the market.
1-year return · S&P 500 +18%
- vs 200-day average
- −3.8%
vs 200-day average · below trend, but not far
- RSI (14)
- 54
RSI (14) · neutral
- Below its 52-week high
- 29%
Below its 52-week high
Details›
- Last close2026-10-09
- $25.83
- 1 monthS&P 500 +2.7%
- −0.67%
- 1 yearS&P 500 +18%
- +67%
- 5 yearsS&P 500 +88%
- +28%
- vs 50-day average$26.84
- −3.8%
- 52-week high
- $36.15
- 52-week low
- $14.41
- Annualised volatility
- 53%
- Insider buying, net, 6 monthsForms 3/4/5 to 2026-10-08
- −$6.2M
| Year | Return |
|---|---|
| 2026 (year to date) | +37% |
| 2025 | +84% |
| 2024 | −49% |
| 2023 | +69% |
| 2022 | −34% |
| 2021 | +28% |
| 2020 | +4.4% |
| 2019 | +92% |
| 2018 | −37% |
| 2017 | +89% |
| Month | Years | Positive | Average |
|---|---|---|---|
| Jan | 10 | 5 of 10 | +6.3% |
| Feb | 10 | 9 of 10 | +8.0% |
| Mar | 10 | 2 of 10 | −10.0% |
| Apr | 10 | 7 of 10 | +8.9% |
| May | 10 | 8 of 10 | +5.4% |
| Jun | 10 | 5 of 10 | −0.18% |
| Jul | 11 | 8 of 11 | +8.8% |
| Aug | 11 | 5 of 11 | +3.8% |
| Sep | 11 | 4 of 11 | −3.8% |
| Oct | 11 | 6 of 11 | −4.8% |
| Nov | 10 | 7 of 10 | +8.9% |
| Dec | 10 | 5 of 10 | −0.18% |
End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.