MercadoLibre (NASDAQ: MELI) , REV Group (NYSE: REVG) , and ArcelorMittal (NYSE: MT) were among the worst performers on the day. After a long advance to record heights for the Nasdaq Composite , tech stocks were generally weaker today, but some high-profile consumer favorites in the Dow Jones Industrial Average powered that benchmark up. CEO Tim Sullivan pointed to challenges including cost inflation, component availability, and weakness in some key areas of specialization as causes for the sluggish performance, and REV Group also cut its outlook for its full fiscal year.