The market's skepticism centered on the shifting economics of AI-driven search, where the transition toward more automated results threatens traditional, higher-margin advertising revenue. This sentiment hit software-as-a-service providers particularly hard; ServiceNow suffered its worst percentage drop on record after issuing subscription growth guidance that failed to satisfy market expectations. Investors are increasingly wary that the rise of autonomous AI agents may cannibalize the business models of established software incumbents.

Despite the sector-wide downturn, pockets of consolidation offered a counter-narrative. DoorDash shares climbed following a $17 billion agreement to acquire grocery-delivery rival Instacart in a mix of cash and stock. Simultaneously, Lumentum Holdings saw its shares rally amid reports that chipmaker Marvell Technology is in advanced negotiations to acquire the optical components manufacturer. This potential deal signals a strategic push to build a vertically integrated hardware powerhouse capable of supporting the massive infrastructure demands of modern AI development.