Elon Musk

Elon Musk simultaneously leads Tesla, SpaceX, X (Twitter), xAI, Neuralink, and The Boring Company — the most businesses run concurrently by any CEO in modern history. In 2024-2025, SpaceX achieved Starship orbital success and reused its Super Heavy booster, while xAI raised $6 billion and Tesla remained the world's most valuable automaker. His net worth of $300+ billion makes him the world's wealthiest person.