FX168 Finance Agency (Europe) reported that on Thursday (December 12), according to Forbes' real-time billionaire rankings, Tesla CEO Elon Musk's net worth surpassed 400 billion dollars, thanks to Tesla's stock price soaring nearly 71% this year and the rising valuation of his rocket company SpaceX.

Musk is the largest Shareholder of Tesla, holding about 13% of the shares. Tesla's stock price rose to a historic high of 424.9 dollars on Wednesday, continuing the upward trend that started after the election on November 5.

In addition, Musk's net worth has also benefited from an internal stock sale at SpaceX. According to a report by Bloomberg on Tuesday, SpaceX and its investors agreed to purchase a total of $1.25 billion of common stocks at a valuation of up to $350 billion.

"The craziest thing is that almost no investors are willing to sell stocks at a valuation of 350 billion dollars!" Musk wrote in response to a post about a Bloomberg report on the social media platform X.

He added that SpaceX has reduced the number of stocks repurchased from employees in order to bring in some new investors.

Tesla's investors have high hopes for Musk's relationship with elected president Donald Trump, believing that this billionaire's role in shaping the policy agenda of the soon-to-be-inaugurated Republican government could be Bullish for Tesla.

In addition to Tesla, Musk also leads the Brain-computer Interface technology startup Neuralink. SpaceX and Neuralink heavily rely on government regulation and policy support, and these companies are expected to benefit from a business-friendly government.

Musk has also spent over 0.25 billion dollars supporting Trump's campaign victory. Additionally, he owns the social media platform X and the tunnel construction company The Boring Company.

On the billionaire rankings, following Musk is Amazon founder Jeff Bezos, with a net worth of 243.7 billion USD; Oracle co-founder Larry Ellison ranks third, with a net worth of 223.4 billion USD.