SpaceX is among the many companies that hope their initial public offerings take off. AP Photo/John Raoux Elon Musk’s SpaceX is becoming a publicly traded company after selling 555.6 million shares in what was the biggest initial public offering in history. But my new research suggests that investors who bought those shares are unlikely to see the explosive growth that past IPOs had. The rocket and satellite maker raised US$75 billion on June 11, 2026, in the offering, giving it a valuation of