Littelfuse is trading at $404.73, up 4.54%, as its earnings beat and bullish Q4 outlook drove the October 29 advance. - October 28 results showed record adjusted EPS of $5.79; Q4 adjusted EPS guidance of $5.05–$5.25 exceeded analyst expectations. - Management forecast Q4 sales of $750–$770 million, citing continued strong demand; the release reported 22% organic growth and a 28.4% adjusted EBITDA margin. - Revenue nevertheless fell short of analyst forecasts.