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Constellium SE (CSTM) stock

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NYSE: CSTM NYSE Aluminum Next results ~February 17, 2027

B Fundamentals grade

Constellium SE is a US-listed company in the aluminum industry. Its financial year ends in December.

Stock price today

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Third-party market data · may be delayed

Fair value per share

Under review: after-tax interest is 122% of the cash flow left for shareholders; our flat discount rate doesn't yet reflect debt this heavy.

Price vs value

Under review: after-tax interest is 122% of the cash flow left for shareholders; our flat discount rate doesn't yet reflect debt this heavy. We'll show the comparison once resolved.

Constellium SE valuation: adjust assumptions and compare models →

Who’s trading

What company insiders, investment funds and members of Congress have been doing with the stock, from their own filings.

  • Insiders5 buying, 13 selling7 purchases and 26 sales by directors and officers, last 12 monthsInsider trades
  • Funds247 adding, 139 cuttingOf 64 active managers that changed their stake, 34 added; quarter to June 30, 2026Fund buyers and sellers

Value diary

Our note on each quarter Constellium SE files

10-Q filed October 28: Constellium SE

Revenue for the twelve months to September 2026 was $10.0bn, up 26.1% on a year earlier, about the same pace as a quarter earlier. That growth ranks 18 of 111 among the materials companies we cover. Free-cash-flow margin rose to 3.2% from -0.5% a year earlier. The diluted share count is down 2.1% on a year earlier, which lifts each remaining share.

Our model value for Constellium SE is under review, so past values are not shown until it is resolved.

Source: 10-Q filed October 28, 2026 on SEC EDGAR · Financials · Valuation

Earlier notes (2)

10-Q filed July 29: Constellium SE

Revenue for the twelve months to June 2026 reached $10.0bn, a 26.1% rise on the prior year and roughly the pace seen a quarter earlier. That growth ranks 8 of 81 among the materials companies we cover. Free-cash-flow margin improved to 3.2%, up from minus 0.5% a year earlier. The diluted share count has fallen 2.1% over the same period, lifting the claim attached to each remaining share. On the back of these figures, our model value moves up from $15.56 to $29.15 a share. The shares currently trade at $24.56.

10-Q on SEC EDGAR

Where Constellium SE stands after its latest 10-Q

Revenue for the twelve months to June 2026 was $9.58bn. Free-cash-flow margin rose to 2.3% from -1.4% a year earlier. The diluted share count is down 3.0% on a year earlier, which lifts each remaining share. It passes 3 of our 5 financial-health checks.

10-Q on SEC EDGAR

Written from the company's filings and our models when each quarter's report arrives. Figures in older notes are as published at the time. Not investment advice.

The Fundamentalytics view

Next results ~February 17, 2027 (estimated)

Constellium SE's trailing-twelve-month revenue grew 26.1% year on year, with a free-cash-flow margin of 3.2%. Where it stands out: stock pay as % of revenue of 0.3% ranks 15 of 137 materials companies we cover.

Our discounted-cash-flow model values the business at ~$30 per share in the base case (~$20–$44 across growth scenarios) — model values under stated assumptions, not a price target.

Current signal Net margin expanding: TTM net margin reached 5.7%, up 4.3pp year over year.

Assembled from SEC-filed figures — the full workings are on this page and in our methodology. Observations, not recommendations.

Highlights

How we pick these

Strengths

  • Fast growth. Revenue grew 26.1% over the last 12 months, against a median of 8.3% for materials companies we cover.
  • Shrinking share count. Diluted shares fell 2.1% in a year, so each share owns more of the business.
  • Estimates rising. Analysts' consensus for next year's earnings per share has risen 8.0% over 90 days.

Things to watch

  • Volatile shares. Over the past year the shares showed annualised volatility of 45% and a beta of 1.9 against the S&P 500.
  • Weak cash conversion. Free cash flow was 56% of net income over the last 12 months.
  • Earnings expected to fall. The consensus expects earnings per share to fall 24% next year.

Latest results: FY2026 Q3

Filed October 28, 2026
Earnings per share
$0.72 against an average estimate of $0.75: missed by 4.3%
Revenue
$2.64bn, up 21.8% on a year earlier
Share reaction
-2.2% in the first session after the results on October 28, 2026, against 0.0% for the S&P 500
Guidance given
adjusted EBITDA $1.03bn to $1.06bn (2026); free Cash Flow $300m (2026)
Next report
October 28, 2026; average EPS estimate $0.45

Constellium SE's figures from its SEC filings and results release; estimates are the analysts' average. Not a recommendation.

Price chart

  • 1 day-0.6%
  • 1 week-1.8%
  • 1 month-5.8%
  • This year+21.9%
  • 1 year+46.1%
  • 5 years+19.7%
  • S&P 500 this year+11.2%

Closing prices to 2026-11-02. Price change only, dividends excluded.

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Third-party market data · may be delayed

At a glance

Trailing twelve months, from SEC filings

Profitability

Revenue (TTM)
$10B
Net margin
5.7%
EPS (TTM, diluted)
$4.10

Growth

Revenue growth
+26.1%
Change in growth rate
+0.2 pts
Share count change
−2.1%

Cash

Free cash flow (TTM)
$319M
FCF margin
3.2%
Stock pay % of revenue
0.3%

Earnings

Last results
October 28, 2026
Next results (est.)
February 17, 2027

News & updates

Updated October 31, 2026

Company announcements, filed results and changes that matter to shareholders.

  1. Results
  2. Guidance
  3. Our research
  4. Results

Refreshed hourly when new source data is available. Summaries are checked against company releases and SEC filings. Company announcement headlines are labelled when a checked summary is unavailable.

Valuation

Constellium SE valuation models and calculator

Fundamentalytics rating

model v1.6 · 2026-11-03

Not rated: held for review: after-tax interest is 122% of the cash flow left for shareholders; our flat discount rate doesn't yet reflect debt this heavy.

The inputs used by the models below have passed source checks. Individual model values are available below and in the interactive valuator. Their differences are shown explicitly; the platform combined value and recommendation remain withheld.

Valuation models

We value Constellium SE as an operating company, with every model that fits that kind of business. Cost of equity 10.4%: the 10-year Treasury yield (4.9%) plus a beta of 1.21 times a 4.5% equity risk premium.

Value per share by model
Model Value per share In the combined value?
Cash-flow model (DCF) Free cash flow to the firm (after stock pay, with after-tax interest added back), grown then faded to 2.5%, discounted at 8.5% as the firm rate, less debt and other claims. — Does not apply: This model is withheld pending its input or assumption review.
Price-to-earnings vs peers Earnings per share times peers' typical (harmonic-mean) price-to-earnings. ~$53 ~$43–$96 Included
Residual income Book value plus the present value of returns above the cost of equity, fading over ten years. ~$74 ~$53–$110 Included
Justified price-to-book Book value times (return on equity - growth) / (cost of equity - growth): steady-state returns. ~$41 ~$36–$47 Included
Combined value Individual source-checked model scenarios are available. The platform combined value and recommendation remain withheld. — Combined value withheld. Review the individual models and their assumptions.

Different models fail in different ways, so where several apply we average them rather than trust one. Peer-based models compare Constellium SE with Materials sector in our coverage, using third-party market data. Model values are estimates under stated assumptions, updated as new filings arrive; not price targets or investment advice. How each model works.

Valuation multiples over time Market data may be delayed

At fiscal year end 2022202320242025Now
Share price$11.83$19.96$10.27$18.85$22.98
Market value$1.7bn$3.0bn$1.5bn$2.7bn$3.2bn
+ Net debt (− = net cash)−$176m$1.7bn$1.8bn$1.8bn$1.7bn
Enterprise value$1.6bn$4.7bn$3.3bn$4.5bn$4.9bn
Multiples
Price / sales 0.2x0.4x0.2x0.3x0.3x
Price / earnings 5.6x19.5x27.1x9.8x5.6x
Price / free cash flow 22.9x44.9x—16.8x10.1x
EV / EBITDA —————

Market value uses the period's diluted share count; figures for each fiscal year use that year's results and the price at year end. "Now" uses today's price and the last twelve months.

Moat

Not assessed: fewer than five years of comparable figures in the filings. AI disruption exposure for this industry: Low.

A rules-based reading of reported figures, not a forecast and not investment advice. How the score is built: methodology.

Forecasts and guidance

Analysts' consensus

Fiscal yearEPSGrowthRevenueGrowth
Current $3.41 +134% $9.2bn +28%
Next $2.60 −24% $9.1bn −1%

Next year's EPS estimate has moved +8.0% in 90 days, across 1 analysts.

How the EPS forecast has moved

The consensus EPS forecast for the current fiscal year is −6.7% on 90 days ago. In the last 30 days, 1 analyst raised Constellium SE's forecast and 1 cut it.

Consensus EPS forecast Constellium SE, last 90 days
$2.00 $2.50 $3.00 $3.50 $4.00 90 days ago 60 days ago 30 days ago 7 days ago Now Current fiscal year, 90 days ago: $3.66 Current fiscal year, 60 days ago: $3.66 Current fiscal year, 30 days ago: $3.66 Current fiscal year, 7 days ago: $3.53 Current fiscal year, Now: $3.41 $3.41 Next fiscal year, 90 days ago: $2.41 Next fiscal year, 60 days ago: $2.41 Next fiscal year, 30 days ago: $2.41 Next fiscal year, 7 days ago: $2.62 Next fiscal year, Now: $2.60 $2.60

Average of analysts' published estimates (third-party data).

View chart data
Period Current fiscal yearNext fiscal year
90 days ago $3.66$2.41
60 days ago $3.66$2.41
30 days ago $3.66$2.41
7 days ago $3.53$2.62
Now $3.41$2.60

Earnings against estimates

Quarter toEstimateActualSurprise
Sept 2026 $0.75 $0.72 −4.3%
Jun 2026 $0.83 $1.35 +61.4%
Mar 2026 $0.51 $1.02 +101.6%
Dec 2025 $0.32 $0.68 +113.0%

Adjusted EPS as companies report it, against the average analyst estimate.

Management guidance

Earnings release, October 28, 2026
  • Adjusted EBITDA 2026 $1.03bn to $1.06bn Non-GAAP Raised
    “Based on our current outlook, we are raising our guidance for 2026 and now expect Adjusted EBITDA in the range of $1.03 billion to $1.06 billion, excluding the non-cash impact of metal price lag, and Free Cash Flow in excess of $300 million.” source
  • Free Cash Flow 2026 about $300m Non-GAAP Raised
    “Based on our current outlook, we are raising our guidance for 2026 and now expect Adjusted EBITDA in the range of $1.03 billion to $1.06 billion, excluding the non-cash impact of metal price lag, and Free Cash Flow in excess of $300 million.” source

Figures and quotations are management's, copied from the company's own press release (SEC 8-K exhibit) and checked word for word against it. Forward-looking statements are the company's expectations, not ours and not advice; guidance can change or be missed.

Analyst recommendations

6 analysts, Oct 2026
Buy583%
Hold117%
Sell00%

Monthly trend

  1. Oct 20261416
  2. Sep 2026415
  3. Aug 2026415
  4. Jul 2026415

Counts of recommendations published by analysts covering Constellium SE, by month. Source: Aggregated broker recommendations (third-party data). Aggregated counts only: we do not reproduce any firm's recommendation or price target, and these are not Fundamentalytics ratings.

Positioning

Short interest
4.4%
of tradable shares
Days to cover
3.7
at average volume
Short interest, 1 month
−17%
to October 15, 2026
Held by institutions
93%
of shares
Held by insiders
3.0%
of shares
Employees
11,500
full time

Consensus figures average analysts' published estimates (third-party data); guidance is the company's own. Neither is our forecast. Short interest is reported twice a month and lags. Market data may be delayed.

This section is general information, not investment advice or a personal recommendation, and it does not take account of your objectives or circumstances. Forecasts and guidance are estimates, not promises: companies miss their own guidance and analysts' figures are often revised. Prices can fall as well as rise, and you can lose money. See our disclaimer.

Share-price performance

Market data may be delayed

What moved the share price

Last 12 months +46.1%

$15.73 on October 31, 2025 to $22.98

ThenNowEffect
Revenue (last 12 months) $7.6bn $9.6bn +25.9%
Net margin 0.4% 5.7% +1252.6%
P/E multiple 71.1x 5.9x −91.7%
Share count 145m 140m +3.1%

Biggest factor: net margin.

The effects multiply back to the price change exactly. Results are the last 12 months as known on each date (filings assumed public 45 days after quarter end).

Return and risk by year

Calendar year 202120222023202420252026 to date
Return
CSTM+28%−34%+69%−49%+84%+22%
Industry peers (median)+50%−23%−2%+12%+70%−14%
S&P 500+29%−18%+26%+25%+18%+11%
Months that ended higher
CSTM58%42%67%33%83%36%
S&P 50075%42%67%75%75%46%
Largest fall from a high during the year
CSTM−21%−52%−21%−56%−37%−36%
S&P 500−5%−25%−10%−8%−19%−9%

Worst fall since November 2, 2015: 72% from December 13, 2019 to March 20, 2020. Getting back needed a 261% gain, reached on January 6, 2021, 292 days after the low.

Price behaviour

52-week range
$14.75 – $36.15
From 52-week high
−36.4%
vs 50-day average
−9.8%
vs 200-day average
−17.7%
Volatility (1 year)
45%
Beta vs S&P 500
1.92

Volatility is the annualised standard deviation of daily returns. Beta 1.5 means the shares typically moved 1.5% for each 1% move in the S&P 500 over the past year. Prices to November 2, 2026.

Share price after results

Next day
5 up, 3 down
typical move ±6.6%
After a week
5 up, 2 down
typical move ±9.9%
After a month
5 up, 2 down
typical move ±10.6%
Results releasedNext dayS&P 500 next day5 days21 days
October 28, 2026 −2.2% 0.0% — —
July 29, 2026 −1.8% +0.1% +2.0% −5.7%
April 29, 2026 +0.6% +1.0% +7.2% +10.2%
February 18, 2026 +10.3% +0.2% +11.0% +1.3%
October 29, 2025 −4.3% −1.1% −7.3% −0.6%
July 29, 2025 +6.0% −0.4% −2.2% +4.8%
April 30, 2025 +12.4% +0.7% +12.3% +26.6%
February 20, 2025 +15.0% −2.1% +27.6% +25.1%

From the close before the release date to the close 1, 5 and 21 trading days after it, so releases before the open and after the close are both captured. Past moves don't predict future ones.

Constellium SE in five measures

Fundamentals grade B
Growth Profitability Cash Balance sheet

Growth, profitability, cash generation and balance sheet are percentiles against the companies we cover in the same industry, from SEC filings (100 = best). Value compares the share price with our modelled value range (50 = at our base value; higher = cheaper). A description of reported data and our model — not a quality score or advice.

Fundamentals

Revenue (TTM) Constellium SE
$7B $8B $9B $10B $11B FY24 Q4 FY25 Q2 FY25 Q4 FY26 Q3 Revenue (TTM), FY24 Q4: $7.3B Revenue (TTM), FY25 Q1: $7.4B Revenue (TTM), FY25 Q2: $7.6B Revenue (TTM), FY25 Q3: $8B Revenue (TTM), FY25 Q4: $8.4B Revenue (TTM), FY26 Q1: $8.9B Revenue (TTM), FY26 Q2: $9.6B Revenue (TTM), FY26 Q3: $10B $10B

Source: SEC EDGAR filings. Retrieved October 29, 2026.

View chart data
Period Revenue (TTM)
FY24 Q4 $7.3B
FY25 Q1 $7.4B
FY25 Q2 $7.6B
FY25 Q3 $8B
FY25 Q4 $8.4B
FY26 Q1 $8.9B
FY26 Q2 $9.6B
FY26 Q3 $10B
Revenue growth, TTM YoY Constellium SE
15% 20% 25% 30% FY25 Q4 FY26 Q1 FY26 Q2 FY26 Q3 Revenue growth, TTM YoY, FY25 Q4: 15.2% Revenue growth, TTM YoY, FY26 Q1: 20.1% Revenue growth, TTM YoY, FY26 Q2: 25.9% Revenue growth, TTM YoY, FY26 Q3: 26.1% 26.1%

Source: SEC EDGAR filings. Retrieved October 29, 2026.

View chart data
Period Revenue growth, TTM YoY
FY25 Q4 15.2%
FY26 Q1 20.1%
FY26 Q2 25.9%
FY26 Q3 26.1%
FCF margin (TTM) Constellium SE
-2% 0% 2% 4% FY24 Q4 FY25 Q2 FY25 Q4 FY26 Q3 FCF margin (TTM), FY24 Q4: -1.5% FCF margin (TTM), FY25 Q1: -1.2% FCF margin (TTM), FY25 Q2: -1.4% FCF margin (TTM), FY25 Q3: -0.5% FCF margin (TTM), FY25 Q4: 1.9% FCF margin (TTM), FY26 Q1: 1.9% FCF margin (TTM), FY26 Q2: 2.3% FCF margin (TTM), FY26 Q3: 3.2% 3.2%

Source: SEC EDGAR filings. Retrieved October 29, 2026.

View chart data
Period FCF margin (TTM)
FY24 Q4 -1.5%
FY25 Q1 -1.2%
FY25 Q2 -1.4%
FY25 Q3 -0.5%
FY25 Q4 1.9%
FY26 Q1 1.9%
FY26 Q2 2.3%
FY26 Q3 3.2%

Data: SEC EDGAR XBRL company facts (as filed in 10-K/10-Q); forms 10-K, 10-K/A, 10-Q, 20-F. Generated November 3, 2026. Definitions in our methodology.

Financial statements

US$ billions unless shown otherwise. Fiscal years, plus the last twelve months (LTM) when newer.

Fiscal year 2022 Dec 2022 2023 Dec 2023 2024 Dec 2024 2025 Dec 2025 LTM Sept 2026
Income
Revenue 8.5 7.8 7.3 8.4 10.0
Net income 0.3 0.2 0.1 0.3 0.6
Diluted EPS $2.10 $1.03 $0.38 $1.92 $4.10
Growth (year on year)
Revenue — −8.3% −6.3% +15.2% +26.1%
Net income — −50.6% — — —
Diluted EPS — −51.0% — — —
Margins
Net margin 3.6% 1.9% 0.8% 3.2% 5.7%
Free-cash-flow margin 0.9% 0.8% −1.5% 1.9% 3.2%
Cash flow
Cash from operations 0.4 0.4 0.3 0.5 0.6
Capital spending 0.3 0.4 0.4 0.3 0.3
Free cash flow 0.1 0.1 −0.1 0.2 0.3
Stock-based pay 0.0 0.0 0.0 0.0 0.0
Free cash flow after stock pay 0.1 0.0 −0.1 0.1 0.3
Balance sheet
Cash 0.2 0.2 0.1 0.1 0.2
Total debt 0.0 1.9 1.9 1.9 1.8
Net debt (negative = net cash) −0.2 1.7 1.8 1.8 1.7
Diluted shares 147m 148m 148m 142m 140m
Returned to shareholders
Buybacks 0.0 0.0 0.1 0.1 0.1
Total returned 0.0 0.0 0.1 0.1 0.1

Source: SEC EDGAR XBRL company facts (US and foreign periodic filings); column headings link to the filing. EBITDA is operating income plus depreciation and amortisation. Free cash flow is cash from operations minus capital spending. Growth is left blank when last year's figure was a loss or under 2% of revenue. Share counts and EPS are restated for stock splits. A dash means the company didn't report the figure.

Financial health

3 of 5 checks passed · September 30, 2026
What it owns · $5.9bn
Short-term assets $3.1bnLonger-term assets $2.7bn
What it owes, and who funded it · $5.8bn
Short-term liabilities $2.1bnLonger-term liabilities $2.4bnShareholders' equity $1.3bn
  • Short-term assets cover short-term liabilities $3.1bn of assets due within a year against $2.1bn of liabilities due within a year.
  • Short-term assets cover long-term liabilities $3.1bn short-term assets against $2.4bn of longer-dated liabilities.
  • More cash than debt $158m of cash against $1.8bn of debt.
  • Debt below 40% of shareholders' equity Debt is 136% of equity.
  • Debt burden no higher than five years ago Five-year comparison not available. Not assessable.
  • A year's operating cash flow covers at least 20% of debt $638m of operating cash flow against $1.8bn of debt.
  • Operating profit covers interest at least five times over Interest not separately reported. Not assessable.

From Constellium SE's latest balance sheet as filed. Checks are fixed, documented rules (methodology), counted only where the company reports the figures — a dot means the filing doesn't break the item out. Descriptions of reported data, not advice.

Dividends, buybacks and capital spending

FY2026 Q3 TTM
Buybacks (TTM)
$118M
Returned to shareholders
37%
of free cash flow
Buybacks, last 3 fiscal years
$194M
Diluted share count
−2.1%
year over year
Total shareholder yield
3.8%
dividends 0.0% + buybacks 3.8% of market value
R&D spending
0.5%
of revenue
Sales & admin spending
3.6%
of revenue
Days sales outstanding
31 days
receivables vs revenue

Competitors: side by side with peers

Closest by revenue in aluminum
Last 12 months unless stated CSTM AA KALU CENX Median
Revenue, last 12 months $10.0bn $14.3bn $4.5bn $2.7bn $7.3bn
Revenue growth, last 12 months 26.1% 11.2% 40.4% 9.7% 18.7%
Revenue growth, 3-year average — 10.5% 12.8% 5.1% 10.5%
Revenue growth, latest quarter 21.8% 23.7% 44.0% 19.7% 22.8%
Gross margin — — 13.4% 18.9% 16.1%
Operating margin — — 7.7% 25.3% 16.5%
Operating margin, 3-year average — — 5.7% 10.6% 8.1%
Net margin 5.7% 10.7% 4.8% 22.6% 8.2%
Cash from operations / revenue 6.3% 11.2% 5.0% 12.8% 8.8%
Free-cash-flow margin 3.2% 6.2% 2.8% 5.7% 4.4%
Free-cash-flow margin, 3-year average — 2.8% 1.6% 1.6% 1.6%
Stock pay / revenue 0.3% 0.4% 0.4% 1.7% 0.4%
Change in share count −2.1% 1.7% 2.8% 0.9% 1.3%

Median of all 4 companies we cover in aluminum. Shaded: best of the six on that line (lowest for stock pay and share-count growth). 3-year figures average the last three 12-month periods; 3-year growth is compound annual. Source: SEC filings.

Peer comparison

171 materials companies
Measure Company Peer median Rank
Revenue growth Growth 26.1% 8.3% 44 of 170
Change in growth rate Growth +0.2pp +2.4pp 108 of 168
Net margin Profitability 5.7% 3.8% 67 of 170
Free-cash-flow margin Cash generation 3.2% 5.0% 99 of 167
Stock pay as % of revenue Cash generation 0.3% 0.7% 15 of 137
Long-term debt as % of assets Balance sheet 30.4% 22.8% 96 of 147
Change in share count Balance sheet -2.1% 0.4% 23 of 161
Days sales outstanding Balance sheet 31 days 45 days 38 of 125

Rank 1 = best in the group (for spending, debt and dilution, lower ranks first).

Where the revenue comes from

Fiscal year to December 31, 2025
Segments
Line of business Revenue Share YoY
Packaging and Automotive Rolled Products $5.1B 60.0% ▲ 21.1%
Aerospace and Transportation $1.9B 22.0% ▲ 6.8%
Automotive Structures and Industry $1.5B 17.9% ▲ 8.0%
Holding Corporate $5M 0.1% ▼ 16.7%
Products and services
Line of business Revenue Share YoY
Packaging Rolled Products $3.8B 44.6% ▲ 31.0%
Automotive Rolled Products $1.2B 14.2% 0.0%
Aerospace Rolled Products $1.1B 12.6% ▲ 0.5%
Automotive Extruded Products $962M 11.4% ▲ 0.2%
Transportation Industry Defense and Other Rolled Products $799M 9.5% ▲ 16.5%
Other Extruded Products $553M 6.5% ▲ 24.8%
Specialty and Other Thin Rolled Products $95M 1.1% ▼ 8.7%
Other Sales $0 0.0% —
Geography
Region Revenue Share YoY
United States $3.3B 39.2% ▲ 33.8%
Other Geographical Areas $1.6B 19.1% ▲ 8.6%
Germany $1.5B 18.2% ▲ 1.2%
France $722M 8.5% ▲ 3.9%
ES $376M 4.5% ▲ 2.5%
United Kingdom $367M 4.3% ▲ 15.8%
PL $317M 3.8% ▲ 18.7%
CZ $205M 2.4% ▼ 1.9%

From Constellium SE's 10-K filed February 25, 2026, as tagged in the filing. View filing. Indented rows are part of the line above; their share is of that line. In the bars, the faint bar behind is the year before.

Who owns it

Funds buying and selling
Reported value
$3.8B
Institutions reporting
385
Shares held vs prior quarter
▼ 4.0%
Positions opened / closed
104 / 28

Top buyers and sellers, Q2 2026: 247 institutions bought and 139 sold ; the biggest buyer was Morgan Stanley (+3.0M shares) and the biggest seller FMR LLC (−4.8M). See which funds bought and sold →

Largest reported holders, June 30, 2026
Manager Value Shares Share of 13F value Shares QoQ
Blackrock, Inc. $408M 12.8M 10.8% ▼ 1.2%
Bpifrance SA $268M 8.4M 7.1% ▼ 33.3%
Morgan Stanley $197M 6.2M 5.2% ▲ 93.5%
Vanguard Portfolio Management LLC $140M 4.4M 3.7% ▲ 11.8%
American Century Companies Inc $135M 4.2M 3.6% ▲ 102.4%
T. Rowe Price Investment Management, Inc. $95M 3.0M 2.5% ▼ 24.7%
State Street Corp $94.2M 3.0M 2.5% ▲ 6.9%
Arrowstreet Capital, Limited Partnership $90.7M 2.8M 2.4% ▼ 11.9%
Nuveen, LLC $88.3M 2.8M 2.3% ▼ 2.0%
Kinetic Partners Management, LP $81M 2.5M 2.1% ▲ 93.7%
Encompass Capital Advisors LLC $77.2M 2.4M 2.0% ▼ 2.3%
AQR Capital Management LLC $76.6M 2.4M 2.0% ▲ 15.8%

From Form 13F filings with the SEC ( quarterly data sets), as reported by each manager for June 30, 2026 and filed up to 45 days later. 13F reports cover long US-listed positions of managers above $100M only, so this is not Constellium SE's complete shareholder register. Values are as reported by the filers ; 1 inconsistently scaled filing rows were excluded.

Insider trading activity

Full insider history and chart
Insider purchases History → $207,677 7 trades by 5 insiders, last 12 months Insider sales History → $12.2M 26 trades by 13 insiders · 0% under pre-set plans
Net ▼ $12M net selling
Insider Date Trade Shares Price Value
Deslarzes Jean-Christophe Director August 3, 2026 Buy 1,490 $27.24 $40,588
Ormerod John Director June 4, 2026 Sell 8,000 $35.01 $280,080
Becker Marcus SVP CPO May 28, 2026 Sell 10,391 $34.93 $362,958
Jarrett Martin SVP Chief Innovation Officer May 14, 2026 Sell 4,716 $33.46 $157,797
Soultz Bradley Lee Director May 14, 2026 Buy 2,500 $33.84 $84,600
Piquier Ludovic SVP Manuf Excellence & CTO May 12, 2026 Sell 1,000 $33.57 $33,570
Brun Nicolas SVP PA, Comm & Sust May 11, 2026 Sell 26,661 $33.85 $902,475
Corre Stephane President, AS&I May 8, 2026 Sell 5,000 $33.52 $167,600
Guo Jack Q. EVP & CFO May 5, 2026 Sell 25,201 $32.62 $822,057
Brandjes Michiel Director May 5, 2026 Sell 10,400 $31.25 $325,000
Deslarzes Jean-Christophe Director May 1, 2026 Buy 1,325 $31.13 $41,247
Corre Stephane President, AS&I May 1, 2026 Sell 5,000 $32.04 $160,200

From insiders' Form 4 filings with the SEC. Excludes awards, option exercises and shares withheld for tax. "Pre-set plan" means the filing marks the trade as made under a Rule 10b5-1 plan. See every insider trade since five years ago, on a price chart.

Trades by members of Congress

All 1 trade and filings

No trades in Constellium SE disclosed in the last 12 months; 1 earlier trade on record.

  • Thomas MacArthur(NJ):Sale (full), $1,001 - $15,000, traded May 27, 2015, filed June 7, 2015

Value ranges as filed; reports can arrive up to 45 days after a trade.

Earnings dates and SEC filings

Results announcements

Next expected around February 17, 2027 estimated from the company's past filing pattern, not announced

  • October 28, 2026
  • July 29, 2026
  • April 29, 2026
  • February 18, 2026
  • October 29, 2025
  • July 29, 2025

Recent SEC filings

Data status

When each part of this page on Constellium SE was last updated.

DataLast updatedSource
Share priceExchange closing prices
Financial statementsSEC 10-K and 10-Q filings
News and updatesCompany releases and SEC 8-K filings
Analyst estimatesAggregated analyst estimates
Valuation and scoresOur models, from the filed figures

How we build and check these figures: methodology and data sources.

Constellium SE in brief

What does Constellium SE do?
Constellium SE is a US-listed company in the aluminum industry. Its financial year ends in December.
What is Constellium SE's stock ticker?
Constellium SE trades under the ticker CSTM on NYSE. This page brings together its financial statements, valuation models, ownership and recent company updates.
What is Constellium SE's revenue, and how fast is it growing?
Over its most recent trailing twelve months, Constellium SE reported revenue of $10B, 26.1% higher than a year earlier, according to its SEC filings.
What is Constellium SE's free cash flow?
Constellium SE's free-cash-flow margin is 3.2% of revenue over the trailing twelve months, ranking 99 of the 167 materials companies we cover.
Who are Constellium SE's largest institutional shareholders?
By value reported in 13F filings for June 30, 2026, the largest reported holders are Blackrock, Inc., Bpifrance SA and Morgan Stanley. 13F reports cover long US-listed positions of managers above $100M, filed up to 45 days after quarter end.
Is Constellium SE buying back stock, and does it pay a dividend?
Constellium SE spent $118M on share repurchases over the trailing twelve months, and its diluted share count fell 2.1% over the year.
What is Constellium SE's market cap?
On November 2, 2026, Constellium SE's market capitalisation was about $3.2B, with a price-to-earnings ratio of 5.6 and net debt of $1.7B. Market figures come from third-party market data and may be delayed.
How much debt does Constellium SE have?
Constellium SE's debt-to-equity ratio is 136.2%, from its latest balance sheet. The financial health section below sets out its other solvency checks.
Who are Constellium SE's competitors?
In our Aluminum peer group, the companies closest to Constellium SE are Alcoa Corp, Kaiser Aluminum Corp and Century Aluminum Co. The side-by-side comparison below sets their revenue, margins and growth against Constellium SE's.
Are insiders buying or selling Constellium SE stock?
Over the last 12 months, Constellium SE's directors and officers reported 7 open-market purchases and 26 sales on Form 4. The insider trading page charts every trade.
When is Constellium SE's next earnings date?
Around February 17, 2027, estimated from the spacing of its past results announcements (8-K filings). That is an estimate, not a confirmed date — Constellium SE announces its own schedule.