The latest figure would be a substantial increase from the $212 a share set in July, when the company raised money and sold shares at a valuation of $400 billion

Private companies like OpenAI and SpaceX have captured enormous investor enthusiasm, driving up their valuations. Yet because they’re privately held, they’ve remained largely inaccessible to retail investors.

The company has reportedly told investors and financial institution representatives that the IPO would include the entire company, including internet satellite provider Starlink.

OpenAI CEO Sam Altman's interest in orbital data centers led him to open talks with Stoke Space, according to The Wall Street Journal.

The $800 billion figure would launch SpaceX past OpenAI, which is valued at about $500 billion. The number also makes Elon Musk about $160 billion. He owns an estimated 40% of SpaceX stock. The most valuable aerospace and defense company in the U.S. is GE Aerospace, valued at about $300 billion.

Sam Altman explored acquiring a potential rival to Elon Musk's SpaceX amid tech industry's orbital datacenter hype.