After reaching a net worth of more than $486 billion in December, Elon Musk’s wealth has sunk below $400 billion for the first time in 2025. Tesla—where Musk derives about 60% of his wealth—has had an abysmal year.

Kimbal Musk last week sold 75,000 Tesla shares, or almost 5% of his stake in his brother's electric vehicle company, filings show.