SpaceX IPO and AI mega-rounds drive U.S. venture capital market to record H1 2026, but gains are highly concentrated
PitchBook says U.S. venture investment reached $412.7 billion in the first half of 2026, with AI deals absorbing the vast majority of capital; SpaceX’s $1.7 trillion IPO was the quarter’s most important exit event. Together, the sources point to a record market size driven mainly by a handful of very large transactions. Reuters’ coverage of SpaceX-related market valuations is more cautious, suggesting that some high-valuation claims leave room for greater volatility.