Among other "meme" stocks, Koss Corp KOSS.O and AMC Entertainment AMC.N climbed 44% and 7.4%. By Medha Singh and Shashank Nayar March 10 (Reuters) - Major U.S. stock indexes were set to open higher on Wednesday after data showed underlying consumer prices remained tepid in February, easing concerns about a spike in inflation as an economic recovery gathers momentum. The 10-year U.S. Treasury yield US10YT=TWEB ticked lower as data showed core consumer prices index inflation rose less than expected as demand for services including airline travel gradually picked up.