Home › WorldMicrosoft stock slumps on outage that includes the Copilot tool it has been heavily promoting2 articles from 2 sources · updated November 13, 2026, 13:04 UTCCoverageMicrosoft Faces Ongoing Service Outages While Applied Materials and Anthropic Make Market Moves Seeking Alpha · November 13, 2026, 12:19 UTCMicrosoft stock slumps on outage that includes the Copilot tool it has been heavily promoting MarketWatch · November 13, 2026, 12:14 UTC