Why the 2026 IPO boom is about to broaden beyond AI mega-deals

After a first half of 2026 dominated by blockbuster AI, semiconductor, and space IPOs, the market is entering a new phase. Strategists say the back half is shaping up as a rebalancing: mid-cap and overlooked sectors are preparing to test investor appetite as money moves beyond a handful of crowded mega-cap AI and chip trades.

SpaceX, which went public on June 12 on the Nasdaq Global Select Market under the ticker SPCX, has been the defining deal of the year. The Elon Musk-led company raised roughly $86 billion in its IPO, giving it a market value of nearly $1.8 trillion at listing and making it the largest IPO in financial market history. Excluding that offering, it still would have been the strongest U.S. IPO quarter since 2021, driven by billion-dollar listings in software, semiconductors, and fintech, according to Renaissance Capital.

Momentum is now building. EY’s Global IPO Trends Q2 2026 report says U.S. IPO proceeds reached approximately $115.6 billion through the first half of 2026, a dramatic increase from........

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