Spacex is now one of world's most valuable privately held companies

SpaceX, the rocket maker founded by billionaire Elon Musk, has raised up to $350 million in new financing and is now valued at around $21 billion, making it one of the most valuable privately held companies in the world.

SpaceX’s new financing was disclosed in public filings that were obtained by Equidate, a marketplace for private company stock. SpaceX declined to comment.

With the latest funding round, SpaceX joins an elite club of seven venture-backed companies valued at $20 billion or more around the world, according to research firm CB Insights. Investors have poured money into the companies, many of which operate