AI Supply Chain Daily Focus — 28 August

Nvidia's blowout print dominated everything: chips, optics, memory and AI-server names rallied on sympathy, but the more consequential detail was Nvidia guiding Q4 gross margin down to 71–72% on memory costs. Separately, a reported Trump administration plan for sweeping semiconductor tariffs — potentially covering AI data-centre servers — emerged as the main new policy risk across the chain.