Tesla CEO Elon Musk has revealed that despite being the world's richest person, he holds less than 0.1% of his net worth in cash. Musk made the comment while responding on X (formerly Twitter) to Kalshi, which had predicted he has a high probability of becoming a trillionaire. "My net worth is primarily due to shares I own in Tesla and SpaceX. I hold less than 0.1% in cash," Musk wrote. He also noted that more than 80% of Tesla is owned by retail and institutional investors, and that Tesla and SpaceX employees receive stock as compensation. Forbes estimates Musk's net worth at approximately $849.3 billion, which would put his cash holdings at roughly $850 million — a small fraction of his total wealth but still a significant sum by any ordinary measure.