Arista Networks is trading 3.16% lower at $178.50 as renewed technology-sector pressure, including concerns about returns on heavy AI infrastructure spending, weighs on shares; no company-specific announcement explaining the move surfaced in available search results. - Mixed megacap results and Lam Research’s weaker-than-expected forecast added pressure; Lam fell 7.4% in extended trading. - Declining U.S. futures and Asian shares, plus geopolitical tensions, weighed on sentiment; the Nasdaq was down 1.73% and technology ETF XLK was down 2.30% pre-market.