SpaceX has raised $75bn, about £56bn, before its SpaceX stock listing on Friday, a debut expected to set a new benchmark for the largest public market launch on record.

In a filing with the US Securities and Exchange Commission, the space exploration and artificial intelligence company said it sold shares at $135 each. That price is the same figure SpaceX had indicated last week and would put the company’s initial market value close to $1.8tn.

At that valuation, Elon Musk, SpaceX’s chief executive and already the world’s richest person, would be in line to become the first trillionaire. That outcome still depends on market pricing once trading begins, because public markets have a habit of noticing when expectations arrive wearing expensive shoes.