Tesla boss Elon Musk has become the first person ever to achieve a net worth of more than $500 billion (£370.9 billion), as the value of the electric car company and his other businesses have risen this year.
The tech magnate's net worth briefly reached $500.1 billion on Wednesday afternoon New York time, before dipping slightly to just over $499 billion later in the day, according to the Forbes billionaires index.
Alongside Tesla, valuations of his other ventures, including the artificial intelligence start-up xAI and rocket company SpaceX, have reportedly climbed in recent months.
This milestone further cements Musk's status as the world's richest person, well ahead of rivals in the global tech sector.
According to Forbes' billionaires index, Oracle founder Larry Ellison is the world's second richest person, with a fortune of about $350.7 billion.
Mr. Ellison briefly overtook Musk last month after shares in Oracle soared by more than 40%, boosted by the firm's surprisingly rosy outlook for its cloud infrastructure business and AI deals.
Musk's enormous wealth is closely tied to his more than 12% stake in Tesla, which has seen its shares rise sharply this year.
Tesla shares were more than 3.3% higher at the end of New York trading on Wednesday and have now risen by over 20% this year, as investors welcome Musk focusing more time on his companies rather than politics.
He faced criticism earlier this year over his work with the Trump administration's Department of Government Efficiency (DOGE), tasked with reducing US government spending and cutting jobs.
Musk, who also owns the X social media platform, has also been vocal about his views on issues such as immigration and diversity, equity, and inclusion (DEI) programmes.
The chair of Tesla's board, Robyn Denholm, stated in September that Musk was now front and centre at the carmaker.
The company's board also indicated that Musk could receive a pay package worth over $1 trillion if he meets a series of ambitious targets over the next decade.
To achieve this package, he would need to boost Tesla's value eightfold, sell a million AI robots, and sell another 12 million Tesla cars, among other goals.
Additionally, last month, Musk announced that he had purchased about $1 billion worth of Tesla shares, which some investors viewed as a vote of confidence in the firm.
Tesla has faced several challenges in recent years, including tough competition from rival electric car makers like China's BYD, and is in the process of transitioning to an AI and robotics business.