Mega-Rounds Reshape Venture Capital, Squeezing Out Mid-Sized Funds

AI mega-rounds have become the defining feature of venture capital in 2025 and 2026, but they are fundamentally reshaping the industry by concentrating capital among the largest firms and leaving traditional mid-sized VCs on the sidelines. The trend has created a two-tier venture market: frontier AI companies like OpenAI, which raised a record $40 billion in March 2025 at a $300 billion valuation, are attracting enormous sums from cloud hyperscalers, sovereign wealth funds, and mega-asset managers, while smaller venture firms are being priced out of later-stage rounds.