Smurfit Westrock shares slide 9.5% after cost inflation pressures earnings, full-year EBITDA guidance below estimates

Smurfit Westrock reported Q3 earnings that missed expectations and cut full-year adjusted EBITDA guidance to $4.7 billion, below the $4.92 billion consensus, citing unprecedented cost inflation from higher energy costs. The stock fell 9.5% in pre-market trading as investors reacted to the margin squeeze and weaker converting volumes.