Among other "meme" stocks, Koss Corp KOSS.O and AMC Entertainment AMC.N jumped 104% and 13%. By Medha Singh and Shashank Nayar March 10 (Reuters) - The blue-chip Dow index hit a record high on Wednesday after tepid consumer prices data for February eased concerns about a spike in inflation and elevated bond yields. Accelerated vaccine rollouts and a monster fiscal stimulus on the horizon have raised bets on higher inflation, triggering a spike in Treasury yields that pushed the tech-heavy Nasdaq down as much as 12% from its Feb. 12 record close last week.