SpaceX, OpenAI valuations would mean they leapfrog Berkshire Hathaway on first day of trading

A SpaceX Falcon 9 rocket is displayed outside a Space Exploration Technologies Corp. facility in Hawthorne, California, on March 26, 2026. Patrick T. Fallon | Afp | Getty Images A slew of tech mega-IPOs are ahead and they're set to push Warren Buffett aside on their first day of trading. SpaceX on Wednesday officially filed to go public on the Nasdaq. On the same day, reports circulated that OpenAI will file for an IPO confidentially as soon as Friday. …