SpaceX raised a record $75 billion in its IPO on Friday after selling about 5% of its outstanding shares, but it could raise even more under a provision designed to keep trading smooth in the first few weeks after a company goes public.
The company's initial public offering includes a so-called greenshoe option, a standard feature of most large U.S. stock market listings that acts like a safety valve that keeps the stock price from going crazy one way or another in its first month of life.
