PitchBook：2026年Q2全球独角兽企业追踪报告：退出、交易与估值呈现高度集中化（英文版）

The top five rounds accounted for 60.1% of Q2 financing. The $8.2 trillion aggregate unicorn valuation now moves with a dozen recently repriced AI names, while the median unicorn, valued near $1.7 billion, tells a different story than the Morningstar PitchBook Global Unicorn Index. • Size and capital efficiency diverge across verticals. SaaS and AI hold nearly $12.5 trillion of unicorn market value, but the highest value creation per dollar invested belongs to cleantech at 329.8% and r