Top 10 U.S. funding rounds highlight AI dominance in 2026

This week’s largest U.S. funding rounds, announced between August 22 and 28, saw AI-focused startups leading the pack. Instinct, a developer of AI assistants, secured the biggest deal with $250 million in Series B funding, valuing the San Francisco-based company at $2.5 billion. Other major financings included Owner, a small business AI tool provider, raising $240 million, and Generalist AI and Gatik, both securing $200 million for physical AI and autonomous trucking respectively. Socure, a predictive analytics firm, raised $156 million and acquired Fravity, while Emerald AI, focused on data center energy management, raised $150 million. Notable also were Regent Craft and AusperBio, each securing $120 million for sea gliders and biopharma respectively. Stability AI and Blank Street rounded out the list with $76 million and $75 million raises. The Crunchbase Megadeals Board tracks these deals, highlighting a shift toward smaller rounds compared to recent weeks.