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CSTM

Constellium SE Ordinary Shares (France) (CSTM) fair value

Basic Materials · Aluminum · NYSE · United States
$23.22-3.21%
Market cap $3.1BNext earnings 2026-10-28Updated Oct 20, 2026
Add earnings to calendarGoogle
Our verdict
Trades 32% below our fair value
Price
$23.22
Model fair valueConfidence: good
$34.08
Model range
$14.65 to $60.55
Fair value $34.08
Price $23.22
4 models fit Constellium SE Ordinary Shares (France) and they disagree: 0 of 4 land within 15% of the average.
Two or more of our models back this value.
Large discount(i)Bronze52
Valued as a mature, profitable company: Discounted cash flow, P/E comparison, EV/EBITDA comparison, Graham number, and Dividend discount.
ACCE opinionConstellium SE Ordinary Shares (France) (CSTM)
Fair value (4 models)
$34.08
ACCE price target
$27.00
Rating
Undervalued
Horizon
12 months
Fair value published on 20 Oct 2026, 15:04 CEST; previously $39.07 since 16 Oct 2026, 00:00 CEST.
ACCE price target published on 11 Oct 2026, 00:00 CEST.
Rating published on 20 Oct 2026, 15:04 CEST.
Price used: $23.22 at the close on 23 Oct 2026, 22:00 CEST.
Models: Discounted cash flow, P/E comparison, EV/EBITDA comparison, and Graham number.
Fair value: the average of the applicable valuation models (discounted cash flow, multiples, residual income, dividend discount, shareholder yield), each run on the latest financial statements and the market price shown. Opinion columns (fair value, target, rating) are shown apart from the data. Full methodology: acceinvestments.com/data/how-we-value-stocks
Full methodology
Conflicts of interest: The author holds no personal position in this security. General statement
Produced by ACCE Investments (acceinvestments.com)
Data
Price vs fair value
31.9% below
+46.8% to fair value
ACCE score
74
out of 100
Analysts
67% buy
6 covering
P/E
6.0x
forward 7.9x
1-year return
+39.0%
Dividend yield
0.00%

Constellium SE Ordinary Shares (France) in four questions

Plain answers, details below
Free accounts get 5 full stock pages a month, including the four answers.
OverviewAsk ACCEValuationQualityAnalystsSmart MoneyCompareNews and Record

Overview

ACCE thesis

Constellium makes rolled aluminum products, mainly sheet and plate for aerospace structures, beverage can stock, and automotive body panels, along with extruded products for automotive and packaging customers. Its edge sits in the aerospace niche, where qualification cycles run for years and the company is a long-standing supplier to Airbus and other major airframers, which makes switching costly for customers. Revenue grew 30.7% over the period you're looking at, and the stock trades at 6.7x trailing and 8.2x forward earnings, a multiple that leaves room for a rerating if the aerospace and automotive volumes keep compounding. The margin profile is thin at the gross level (16.6%) and 8.9% at the operating line, so earnings are sensitive to aluminum pricing and energy costs, and the 53.1% ROE partly reflects a small equity base rather than pure operating excellence. This is a cyclical, capital-intensive business at a low multiple, which is worth a deeper look mainly to test whether the aerospace mix shift can hold margins through a downturn.

AI-assisted·How I use AIWritten Oct 18, 2026
⚠ Investor warnings · 3 flagsAI-assisted·How I use AI
  • moderate
    Leverage elevated
    Debt/Equity of 2.04 is high for an aluminum processor. Earnings are up 316.0% YoY, but a cyclical downturn would put that debt load under strain.
  • moderate
    Insider selling outweighs buying
    Last 10 disclosed insider transactions show $4.72M in sales against $0.04M in buys, a clear net-selling skew.
  • moderate
    Score down 8 points in 90 days
    ACCE Score fell from 83 to 75 over 90 days, with Quality (57) and Momentum (52) the weakest components.

AI research notes

AI-assisted·How I use AIWritten Oct 18, 2026 · figures from 2026-06-30 · prices to Oct 23, 2026
Why it could do well
  • Revenue grew 30.7% year over year, well ahead of the 11.6% annual average over five years.
  • At $23.22 the stock trades at 8.2 times forward earnings, against a sector median of 17.1 times.
  • The shares trade 31.9% below the model fair value of $34.08, and four of five valuation models sit in the consensus.
Why it could disappoint
  • Debt to equity of 2.04 leaves the balance sheet heavily geared, with the debt load large relative to shareholder equity.
  • A 14.0% net margin and 7.7% return on invested capital are thin for a business carrying this much borrowing.
  • The stock sits 14.0% above the ACCE price target of $27.00, so our own view does not yet support the current price.
Each chip shows the exact figure and where it comes from. A claim without a source is not published.

Next results

Oct 28, 2026
We update the fair value about 2 days after the results, once the new figures are filed.Add to calendarGoogle

Walk me through this stock

Plain-English pros, cons, and what to watch. Pro feature.

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Valuation

INVESTOR
Where CSTM's valuation models land
Price
$23.22
Model fair value
$34.08
Model range
$14.65 to $60.55
Fair value $34.08
Price $23.22
The price sits inside the model range.
Model
Fair value
Upside
Discounted cash flow
Dividend discount
EV/EBITDA comparison
Graham number
P/E comparison
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Quality

INVESTOR
Quality and conviction INVESTOR FEATURE

The full quality picture: a reason under every score, how the scores moved, and the conviction breakdown.

  • +A plain reason under every score
  • +Conviction breakdown and growth / value / quality / momentum scores
  • +Score history: how each score moved over time

Analysts

Wall Street consensus

Bullish67% buy · 6 covering analysts
● Strong buy 4● Buy 0● Hold 2● Sell 0● Strong sell 0
Analyst intelligence INVESTOR FEATURE

The full analyst picture: the price-target distribution against the current price, forward consensus estimates, and how ACCE's own models compare.

  • +Price-target low / average / high vs the current price, with implied upside
  • +Forward revenue and EPS consensus by fiscal year
  • +ACCE fair-value models lined up against the Street

Smart Money

PRO

In one line

Trades are only made public after a delay. We show the delay so you know how old the news is.

Company insiders
No trades filed
Last 90 days
Congress
No trades filed
Last 180 days
Average delay
No trades filed
From trade to public filing
Do politicians beat the market? Our backtest →
Smart money tracking PRO FEATURE

Follow the informed money: 13F position changes, insider and Congress trades, and 13D activist filings.

  • +Quarter-over-quarter institutional position changes
  • +Every insider and Congress trade, with how late it was disclosed
  • +Active 13D activist filings and top holders

Compare

Where it sits vs peers

News and Record

Press releases mentioning this company

Recent performance

1 week
-8.8%
1 month
-7.0%
3 months
-20.1%
6 months
-26.0%
YTD
+23.2%
1 year
+39.0%

SEC filings

Recommendation history, last 12 months

DateTypeNewPreviousPrice
20 Oct 2026, 15:04 CESTRatingUndervaluedfirst publication$25.55
20 Oct 2026, 15:04 CESTFair value$34.08$39.07$25.55
16 Oct 2026, 00:00 CESTFair value$39.07$39.69$25.37
11 Oct 2026, 00:00 CESTACCE price target$27.00first publication$25.81
11 Oct 2026, 00:00 CESTFair value$39.69$35.64$25.81
30 Sept 2026, 00:00 CESTFair value$35.64$36.48$24.63
19 Sept 2026, 00:00 CESTFair value$36.48$37.01$26.19
14 Sept 2026, 00:00 CESTFair value$37.01$33.77$26.17
6 Sept 2026, 00:00 CESTFair value$33.77$34.30$27.14
28 Aug 2026, 00:00 CESTFair value$34.30$38.70$27.22

This analysis is not personalised investment advice and does not take your situation, objectives or risk tolerance into account. ACCE Investments is not an authorised investment firm.

Investing in shares carries a risk of losing capital. The value of an investment can go down as well as up.

Valuation horizon: 12 months from the publication date.

Conflicts of interest. ACCE Investments is operated by Adrien Chantreuil, who may hold personal positions in the securities analysed. Positions are declared on each security. ACCE receives no payment from the companies analysed or from any intermediary for this analysis.

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Snapshot

Growth100Value92Quality57Momentum46Total74
Valuation
Trailing P/E
6.0x
Forward P/E
7.9x
PEG
0.02
P/B
2.71x
EV / Revenue
0.5x
Book value/sh
$9.19
Enterprise value
$5.1B
Profitability
ROE
53.1%
FCF yield
4.89%
ROIC
7.7%
Health and risk
Debt / equity
2.04
Dividend yield
0.00%
Beta
1.57

Price

+37.4% · 1Y

Ask anything about CSTM

Answered from Constellium SE Ordinary Shares (France) fundamentals + recent valuations. Every number shows its source and date.

This stock Peer Peer median weaker → stronger
P/Ebetter than 83% of peers
low 5.4x6.0xhigh 13.3x
ROEbetter than 100% of peers
low 12%53%high 53%
Div yieldbetter than 33% of peers
low 0.0%0.0%high 1.9%

Peers

Prices Oct 23, 2026
CompanyPriceFair valuevs fair valueP/EROEQualityScore
CSTM Constellium SE Ordinary Shares (France)$23.22$3432% below6.0x53.1%5774
CENX Century Aluminum Company Common Stock$32.65$10214% above5.4x51.7%8472
KALU Kaiser Aluminum Corporation Common Stock$114.99$7357% above8.9x26.4%5869
GRNG.ST Gränges AB (publ)kr 174.10kr 15215% above13.3x11.6%5271
NATIONALUM.NS National Aluminium Company Limited₹310.90--8.2x-10087
ALUA.BA Aluar Aluminio ArgentinoARS 852.50--9.0x12.2%6871
AAI.AX Alcoa CorporationA$57.71A$11349% below6.9x20.6%6970

Sector report card

Where CSTM ranks against its sector peers on each metric.

Computing percentiles…
  • GlobeNewswire•Oct 13, 2026
    Constellium to Report Third Quarter 2026 Results on October 28, 2026
  • GlobeNewswire•Sep 25, 2026
    Pool Corporation Announces Director Appointment
  • GlobeNewswire•Sep 2, 2026
    Start of Day Message
4 more press releases · full archive on Investor+.INVESTOR
37 filings
August 2026
Aug 3
Form 4Insider transactionPeriod 2026-08-03
View on SEC →
July 2026
Jul 29
8-KCurrent reportPeriod 2026-07-29
View on SEC →
Jul 29
10-QQuarterly reportPeriod 2026-06-30
View on SEC →
34 more filings + AI summaries on Investor+.INVESTOR