US equity futures edged lower on Friday as technology shares gave back part of the previous session's gains and macroeconomic risks continued to weigh on sentiment. S&P 500 and Nasdaq 100 futures fell 0.5%, while Dow futures moved slightly higher. Marvell dropped nearly 8% in premarket trading, reversing some of its monthly advance despite beating earnings estimates and raising its outlook. Chipmakers and AI infrastructure companies broadly retained their weekly gains after Nvidia said demand for computing capacity continues to surge through the coming quarters. Fed Chairman Warsh was scheduled to speak at the Jackson Hole Economic Symposium as investors assessed economic uncertainty and divisions within the FOMC (Federal Open Market Committee). Treasury yields remained elevated after surging since the start of the quarter, with larger federal deficits and heavy corporate issuance adding pressure. Warsh's signals that tighter financial conditions in secondary bond markets are natural and could serve as a desired policy tool for the Fed were also part of the market focus.