SpaceX shares begin trading today, June 12, a day after the company priced its initial public offering, in what is set to become one of the largest stock market debuts in history. The Elon Musk-led company is looking to raise $75 billion in the offering, valuing the business at $1.75 trillion — a figure that would place it among the seven most valuable companies in the US, just ahead of Tesla. The IPO opened roughly 30% of the float to retail investors, while existing shareholders face lock-up r