After Twitter deal Elon Musk currently owns 6 major companies that works in different sectors.
Tesla, Inc. is an American multinational automotive and clean energy company headquartered in Austin, Texas. Total assets: US$62.1 billion (2021) Total equity: US$30.2 billion (2021)
In 2016, Tesla acquired SolarCity, the US' leading provider of solar panels. Today, Tesla sells four solar energy storage and generation products: Powerwall, Powerpack, Megapack, and Solar Roof.
The aerospace company founded by Musk in 2002. According to his company bio, Musk is the "lead designer" at SpaceX, where he oversees the spacecraft and rocket development "for missions to Earth orbit and ultimately to other planets."
Musk is listed as Neuralink's CEO on Tesla's website, but his exact involvement isn't clear. The company previously stated in legal documents that the billionaire "has no executive or management role at Neuralink."
Musk is also the founder of The Boring Company, a tunnel construction startup based in Texas that launched in 2016. One of its future projects is a "Hyperloop," which would theoretically allow passengers to travel at 700 miles per hour.
Twitter, Inc. is an American communications company based in San Francisco, California. The company operates the microblogging and social networking service Twitter.