Constellium SE Ordinary Shares (France) (CSTM)
CSTM moved a median of -0.41% 30 minutes after news, and -0.20% by the close. How CSTM actually reacts to news — the realized, point-in-time move the market made, measured across 250 labeled events over the last three years with zero look-ahead.
CSTM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.20% | 37% | 246 |
| 30-min | -0.41% | 34% | 250 |
| 60-min | -0.31% | 38% | 250 |
| to close | -0.20% | 39% | 248 |
| Middle 50% of CSTM reactions | -1.05% to +0.28% |
|---|---|
| Median reaction (30-min) | -0.41% |
| Measured reactions | 250 |
Half of all Constellium SE Ordinary Shares (France) news events land between -1.05% and +0.28% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How CSTM reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 17 | -0.24% | 47% | -1.04% |
| Analyst downgrades | 11 | +0.41% | 55% | -0.28% |
| Rating reiterations | 34 | -0.20% | 38% | -0.84% |
| Price-target raises | 10 | -0.09% | 40% | -1.35% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 2 further classes were observed with fewer than 10 measured events and are not published. See how CSTM ranks against every other measured name →
That’s how CSTM usually reacts — get an email when it moves on news →Email me when CSTM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to CSTM's baseline. Nothing else.
Recent CSTM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Constellium to Report Third Quarter 2026 Results on October 28, 2026 | Press release | GlobeNewswire | -0.13% | +1.34% | |
| Constellium Reports Strong Second Quarter and First Half 2026 Results, including Record Segment Adjusted EBITDA; Raises Full Year 2026 Guidance | Press release | GlobeNewswire | +0.27% | -5.67% | |
| Form 10-Q CONSTELLIUM SE For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.29% | -0.83% | |
| Form 8-K CONSTELLIUM SE For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | +0.27% | -5.67% | |
| Constellium to Source Local Renewable Energy for its German Facilities | Press release | GlobeNewswire | -0.07% | -0.78% | |
| Constellium to Report Second Quarter 2026 Results on July 29, 2026 | Press release | GlobeNewswire | +0.80% | -0.75% | |
| Constellium Sells Automotive Structures Joint Venture in Changchun, China | Press release | GlobeNewswire | +2.46% | -0.92% | |
| Form S-3ASR CONSTELLIUM SE | SEC filing · Form S-3ASR | SEC EDGAR | -0.63% | -1.69% | |
| Form SD CONSTELLIUM SE | SEC filing · Form SD | SEC EDGAR | +0.26% | -0.41% | |
| Voting Results from Constellium's 2026 Annual General Meeting | Press release | GlobeNewswire | +0.87% | +4.13% | |
| Form 8-K CONSTELLIUM SE For: May 21 | SEC filing · Form 8-K | SEC EDGAR | +0.11% | -0.37% | |
| Constellium Reports Strong First Quarter 2026 Results, including Record Quarterly Segment Adjusted EBITDA; Raises Full Year 2026 Guidance | Press release | GlobeNewswire | +7.06% | +3.60% | |
| Form 10-Q CONSTELLIUM SE For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.08% | +0.12% | |
| Form 8-K CONSTELLIUM SE For: Apr 29 | SEC filing · Form 8-K | SEC EDGAR | +7.06% | +3.60% | |
| Constellium Enters Multi-Year Agreement with Airbus for the Supply of Aluminum Alloy Extrusions | Press release | GlobeNewswire | +0.62% | -1.96% | |
| Constellium to Report First Quarter 2026 Results on April 29, 2026 | Press release | GlobeNewswire | +1.09% | -3.51% | |
| Form ARS CONSTELLIUM SE For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.52% | -0.47% | |
| Form DEF 14A CONSTELLIUM SE For: Dec 31 | SEC filing · Form DEF | SEC EDGAR | -0.52% | -0.47% | |
| Form DEFA14A CONSTELLIUM SE | SEC filing · Form DEFA14A | SEC EDGAR | -0.52% | -0.47% | |
| Form PRE 14A CONSTELLIUM SE For: Dec 31 | SEC filing · Form PRE | SEC EDGAR | +0.78% | -4.91% | |
| Constellium Board Authorizes a New $300 million Share Repurchase Program Expiring in December 2028 | Press release | GlobeNewswire | +1.84% | -2.61% | |
| Form 8-K CONSTELLIUM SE For: Mar 12 | SEC filing · Form 8-K | SEC EDGAR | +1.84% | -2.61% | |
| Constellium Releases 2025 Sustainability Report, Shaping the Future of Sustainable Aluminum | Press release | GlobeNewswire | -0.91% | +4.03% | |
| Form 10-K CONSTELLIUM SE For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.97% | +0.70% | |
| Constellium Reports Strong Fourth Quarter and Full Year 2025 Results; Provides Full Year 2026 Guidance | Press release | GlobeNewswire | +3.42% | -0.43% | |
| Form 8-K CONSTELLIUM SE For: Feb 18 | SEC filing · Form 8-K | SEC EDGAR | +3.42% | -0.43% | |
| Constellium to Report Fourth Quarter and Full Year 2025 Results on February 18, 2026 | Press release | GlobeNewswire | -0.66% | +0.79% | |
| Constellium Inaugurates New Finishing Lines at Singen, Marking Completion of Major Investment | Press release | GlobeNewswire | +0.12% | +5.15% | |
| Constellium Appoints Ingrid Joerg as its New Chief Executive Officer, Effective January 1, 2026 | Press release | GlobeNewswire | -5.60% | -7.03% | |
| Constellium Reports Strong Third Quarter 2025 Results; Raises Full Year 2025 Guidance | Press release | GlobeNewswire | -5.60% | -7.03% | |
| Form 10-Q CONSTELLIUM SE For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.09% | -2.92% | |
| Form 8-K CONSTELLIUM SE For: Oct 29 | SEC filing · Form 8-K | SEC EDGAR | -5.60% | -7.03% | |
| Constellium to Report Third Quarter 2025 Results on October 29, 2025 | Press release | GlobeNewswire | +0.00% | +3.94% | |
| Constellium Extends Partnership with Embraer for Advanced Aluminum Aerospace Solutions | Press release | GlobeNewswire | -1.25% | -4.72% | |
| Constellium to Showcase Advanced Aluminum Solutions from Collaborative Research Project “CirConAl” at Cenex 2025 | Press release | GlobeNewswire | +0.14% | -0.72% | |
| Form 10-Q CONSTELLIUM SE For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -1.52% | -7.30% | |
| Constellium Reports Second Quarter and First Half 2025 Results; Raises Full Year 2025 Guidance | Press release | GlobeNewswire | +1.45% | — | |
| Form 8-K CONSTELLIUM SE For: Jul 29 | SEC filing · Form 8-K | SEC EDGAR | +1.45% | — | |
| Constellium Drives Digital and Modular Innovation for Smart Aluminum Automotive Structures with ARENA2036 | Press release | GlobeNewswire | -0.36% | -2.71% | |
| Constellium to Report Second Quarter 2025 Results on July 29, 2025 | Press release | GlobeNewswire | -0.60% | -0.98% | |
| Constellium Honored with Three Supplier Awards from Airbus | Press release | GlobeNewswire | +0.60% | -0.38% | |
| Constellium to Exhibit at the 2025 Paris Air Show | Press release | GlobeNewswire | -0.18% | -3.10% | |
| Constellium and TARMAC Aerosave Achieve Breakthrough in Full-Circular Aluminum Recycling for End-of-Life Aircraft | Press release | GlobeNewswire | +1.00% | +3.95% | |
| Constellium Joins America Makes Project to Advance Use of Aluminum Additive Manufacturing in Defense and Aerospace | Press release | GlobeNewswire | +0.12% | -1.31% | |
| NASA Visits Constellium Ravenswood to Celebrate Artemis Partnership | Press release | GlobeNewswire | -0.86% | -0.08% | |
| Form SD CONSTELLIUM SE | SEC filing · Form SD | SEC EDGAR | -0.84% | +3.27% | |
| Voting Results from Constellium's 2025 Annual General Meeting | Press release | GlobeNewswire | +0.89% | +3.45% | |
| Form 8-K CONSTELLIUM SE For: May 15 | SEC filing · Form 8-K | SEC EDGAR | -0.14% | -0.09% | |
| Constellium Reports First Quarter 2025 Results and Maintains Full Year 2025 Guidance | Press release | GlobeNewswire | +0.00% | +4.01% | |
| Form 10-Q CONSTELLIUM SE For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.00% | -0.49% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the CSTM section they belong to.
Where else CSTM is measured.
CSTM earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| NORBORD INC (OSB) | 251 | +0.08% | 57% |
| Teck Resources Ltd Ordinary Shares (TECK) | 251 | -0.10% | 45% |
| COVIA HOLDINGS CORP (CVIA) | 244 | -0.39% | 43% |
| LANXESS AG ORD (LNXSF) | 243 | 0.00% | 14% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Basic Materials names, measured the same way →
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How the numbers are made.
How is Constellium SE Ordinary Shares (France)'s median reaction calculated?
Every labeled CSTM news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 250 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 34% of CSTM's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does CSTM's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.