Elon Musk can now be considered richer than John D. Rockefeller
1. Elon Musk's net worth reached $500 billion due to TSLA's share rally. 2. Musk's wealth slightly dipped below $500 billion by market close. 3. Musk's fortune surpassed Rockefeller's wealth relative to U.S. GDP. 4. Musk's wealth is tied to TSLA, SpaceX, and xAI performance. 5. AI rivals' valuations raise concerns about Musk's capital-raising abilities.