Major U.S. stock index futures, which were earlier lower with Nasdaq 100 futures leading declines, later reversed into positive territory in premarket trading, according to updated market data. Earlier weakness had been concentrated in semiconductor and storage stocks including Nvidia, Intel, AMD, Qualcomm, Seagate, Western Digital, SanDisk and Micron. In the later update, Micron Technology and SanDisk erased declines of more than 4% and rose more than 1%, while computing rental firms Nebius and CoreWeave gained 3% and 2% after falling 17% and 14% in the previous session.