Alphabet spending plans and Tesla earnings miss trigger broad U.S. stock sell-off

Investor worries over Alphabet’s higher spending plans and Tesla’s earnings miss helped trigger a broad sell-off in U.S. stocks, with the tech-heavy Nasdaq falling the most as megacap technology shares came under pressure. The moves also reflected broader concerns about the cost of artificial intelligence investment, while oil prices surged above $100 a barrel, adding to market strain. Alphabet fell sharply after raising its capital expenditure outlook, and Tesla dropped after reporting weaker-than-expected quarterly profit, rattling sentiment across global markets. The declines underscored how much Wall Street remains reliant on a handful of large technology companies and how sensitive investors are to signs of heavy spending.