Key Takeaways Constellium posted 28% revenue growth in Q4, led by packaging and aerospace strength.CSTM generated $178M free cash flow in 2025 and cut leverage to 2.5x.Alcoa's 2026 EPS seen up 37.4%, but rising costs pressure margins.Alcoa Corporation (AA) and Constellium SE (CSTM) are two prominent players in the aluminum sector with global operations and diversified portfolios. With aluminum prices remaining high, driven by global economic uncertainties and trade tensions, comparing these two industry par ...