Constellium SE Ordinary Shares (France) (CSTM) : juste valeur

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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.