Musk’s shrinking fortune is largely tied to Tesla’s stock, which has plunged about 36% since the start of the year as the company struggles with slowing sales. Roughly 60% of Musk’s wealth comes from Tesla shares and options. The rest of his wealth comes from his other ventures. His net worth skyrocketed when SpaceX hit a $350 billion valuation, making it the world’s most valuable startup. Meanwhile, xAI, his artificial intelligence startup, raised $6 billion in funding, pushing its valuation to $50 billion.