AI Financing Concentrates in Frontier Infrastructure, Physical AI, and Mega-Rounds

Q3 2026 saw 27 billion-dollar rounds, with AI startups capturing 64% of global venture funding and capital flowing heavily into data centers, chips, robotics, defense autonomy, and frontier labs. RobCo's reported valuation above $1 billion and reported $100 million raise highlight physical-AI enthusiasm, while limited deployment and revenue evidence, circular financing, leverage, and exit risks remain unresolved.