SpaceX Aims to File for IPO as Soon as This Week

SpaceX is aiming to file its initial public offering prospectus with regulators later this week or next week, according to a person with direct knowledge of the plans. The confidential filing will formalize the IPO plans for Elon Musk’s rocket and telecom company as it targets a June public listing.

The offering will test investor appetite for what is gearing up to be the biggest U.S. IPO of all time—by a wide measure. Advisers involved in the preparation predict the company could try to raise more than $75 billion in the IPO, higher than a previously reported estimate of $50 billion, according to the person. The company, last valued at $1.25 trillion, won’t decide the actual size of the offering and a valuation until a few weeks before the IPO.