Elon Musk's companies are soaring in value

Driving the news: Musk's artificial intelligence startup xAI, maker of the chatbot Grok, is raising up to $6 billion at a $50 billion valuation, CNBC reported today.

• The fund-raise, which kicked off before the election, would double the valuation received in a separate round earlier this year.
• Musk's SpaceX, meanwhile, is prepping a tender offer that would value the rocket company at more than $250 billion, up from $210 billion earlier this year, the Financial Times reported.

The public markets have been kind too.

• Tesla stock has been on a roll since Trump was reelected, jumping more than 25% since closing at $251.44 on Nov. 5, adding around $225 billion of market value.
• At least one analyst has suggested that Tesla take advantage of the post-election exuberance by selling new shares.

💭 Nathan's thought bubble: The Musk-Trump alliance is likely giving investors confidence that the government won't get in the way of the growth ambitions of Musk's business empire.

Yes, but: X is a lone exception. Since Musk bought it two years ago, one existing investor, Fidelity, has marked its value down by 79% amid an advertiser exodus.

The bottom line: Investors don't seem concerned about whether Musk might be stretched too thin — quite the opposite.