CSTM

Constellium SE

Basic Materials · $3.3B market cap

Share price

$24.40

close of Oct 3, 2026

Fair value

$12.33

Sticker Price

Payback Price

$4.93

buy price

Overpriced

CSTM is Overpriced: at $24.40 it trades 98% above its fair value of $12.33. Its buy price (Payback Price) is $4.93, 80% below today's price. Business quality is limited: only 1 of 5 key numbers clears the 10% bar.

How we valued it

Free Cash Flow. Sales grew 2% a year over the last 3 years, below the 15% we look for in a fast grower, so we value it on its free cash flow instead of an earnings forecast.

Business quality

1 of 5 clear the 10% bar. What are the Big Five?

Earnings per share growth8.0% a year✗

Equity per share growth19.4% a year✓

Sales growth6.7% a year✗

Free cash flow growth2.3% a year✗

Return on invested capital6.5%✗

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Insider activity

Since Jul 10, 2026: 1 open-market purchase worth $41K and 1 other filing (stock awards, tax withholding and similar). Why purchases matter

Purchases

Deslarzes Jean-Christophe

director · 2026-08-03

Bought

$41K

Other filings

Joerg Ingrid

CEO · 2026-07-10

Tax withholding

$87K

About Constellium SE

Constellium SE, along with its various subsidiaries, specializes in the development, production, and distribution of high-performance rolled and extruded aluminum solutions. These solutions primarily serve the packaging, aerospace, and automotive industries. Its operations are structured into three distinct business segments: Packaging & Automotive Rolled Products, Aerospace & Transportation, and Automotive…

Aluminum