(FILES) SpaceX, Twitter and electric car maker Tesla CEO Elon Musk looks on as he speaks during his visit at the Vivatech technology startups and innovation fair at the Porte de Versailles exhibition center in Paris, on June 16, 2023. Elon Musk's SpaceX on June 11 confirmed it will begin trading on the Nasdaq exchange on June 12 in the biggest initial public offering in history, a blockbuster market debut that could propel the entrepreneur to trillionaire status. (Photo by Alain JOCARD / AFP via Getty Images)