Based on Musk's 42% stake in SpaceX, as of 12:00 PM Eastern Time on Monday, his personal wealth has increased by $168 billion, reaching approximately $677 billion. He also became the first person in history to have a net worth of $600 billion or more, and no one had ever surpassed the $500 billion mark before.

The significant increase in Musk's net worth is mainly due to the soaring valuation of his space exploration company SpaceX. Earlier this month, there were media reports that SpaceX launched an internal stock tender offer, which valued SpaceX at $800 billion, doubling its $400 billion valuation from August.

Musk's wealth is likely to soar further next year. SpaceX is planning an initial public offering (IPO) in 2026, which could value the company at around $1.5 trillion, making Musk a trillion dollar billionaire.

Based on Musk's 42% stake in SpaceX, as of 12:00 PM Eastern Time on Monday, his personal wealth has increased by $168 billion, reaching approximately $677 billion. He also became the first person in history to have a net worth of $600 billion or more, and no one had ever surpassed the $500 billion mark before.

The significant increase in Musk's net worth is mainly due to the soaring valuation of his space exploration company SpaceX. Earlier this month, there were media reports that SpaceX launched an internal stock tender offer, which valued SpaceX at $800 billion, doubling its $400 billion valuation from August.

Musk's wealth is likely to soar further next year. SpaceX is planning an initial public offering (IPO) in 2026, which could value the company at around $1.5 trillion, making Musk a trillion dollar billionaire.