Nvidia’s leadership crisis, with CEO Jensen Huang’s sudden resignation amid a national security probe and personal scandal, has intensified trader concerns over AI sector stability as of mid-November 2026. Shares of Nvidia and related firms have fallen sharply from October highs, reflecting broader doubts about sustained returns on trillions in infrastructure spending amid slowing revenue growth at some labs and rising debt costs. Democratic midterm gains have added regulatory pressure on data-center expansion, while Anthropic’s IPO roadshow targets a more modest valuation and OpenAI has scaled back fundraising ambitions. Competitive dynamics remain fluid, with new model releases like Google’s Gemini 4 continuing, yet mounting questions about enterprise ROI and neocloud profitability could influence near-term market-implied odds on a bubble burst.