Constellium SE (CSTM:NYSE) closed at $23.22 on October 23, 2026, down 3.21% on the day. The stock trades 37.2% below its 52-week high of $36.99 and 58.8% above its 52-week low of $14.62. Over the past year, it gained 37.4%. Constellium SE is part of the Basic Industries sector (Metal Fabrications).
In 252 trading sessions since October 23, 2025, CSTM closed higher on 128 days (51%). Its best day was April 1, 2026 (+11.15%) and its worst was August 18, 2026 (-6.45%). The stock moved 10% or more in a single session 1 time. It opened at least 5% above the previous day's high 1 time.
Constellium N.V. engages in the design, manufacture, and sale of specialty rolled and extruded aluminum products for the aerospace, packaging, and automotive end-markets. The company operates in three segments: Packaging & Automotive Rolled Products, Aerospace & Transportation, and Automotive Structures & Industry. The Packaging & Automotive Rolled Products segment produces rolled aluminum products, including can stock and closure stock for the beverage and food industry, and foil stock for the flexible packaging market. It also supplies automotive body sheets and heat exchangers the automotive market; and sheet and coils for the building and constructions markets. The Aerospace & Transportation segment provides aluminum and specialty materials products, including aerospace plates and sheets, aerospace wing skins, plates for general engineering, and sheets for transportation applications, as well as other extrusions and precision casting products. This segment serves aerospace, transportation, industry, and defense sectors. The Automotive Structures & Industry segment offers crash management systems, side impact beams, body structures, and cockpit carriers; and soft and hard alloy...
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