Elon Musk Becomes First Person to Surpass $600 Billion Net Worth, Says Forbes

Elon Musk has achieved an unprecedented milestone, becoming the first individual in history to surpass a net worth of $600 billion, with Forbes estimating his fortune at $677 billion as of December 15, 2025. This remarkable surge positions Musk far ahead of any other billionaire, underscoring his dominance in technology, space exploration, and artificial intelligence sectors. The achievement follows a series of prior records, including crossing $500 billion in October 2025 and $400 billion the previous year, highlighting the rapid escalation of his wealth driven by innovative ventures.

The primary catalyst for this wealth explosion is the dramatic revaluation of SpaceX, Musk's aerospace enterprise, which recently completed a tender offer valuing the company at $800 billion—doubling its August 2025 assessment of $400 billion. Musk's estimated 42% ownership translates to a personal stake worth approximately $336 billion, adding $168 billion to his net worth in this transaction alone. SpaceX's advancements, including preparations for a potential 2026 initial public offering that could reach $1.5 trillion, reflect investor confidence in its Starship program and satellite initiatives, further solidifying its status as Musk's most valuable asset.

Additional momentum stems from Tesla, where Musk holds about a 12% stake valued at roughly $197 billion. Despite challenges in electric vehicle sales, Tesla shares have risen 13% year-to-date, bolstered by a nearly 4% increase on December 15 following announcements of unsupervised robotaxi testing in Austin, Texas. These tests mark a significant step toward fully autonomous operations, with vehicles now operating without human safety monitors or occupants in select scenarios. The development aligns with Musk's long-term vision of transforming Tesla into a leader in autonomy and robotics.

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In November 2025, Tesla shareholders overwhelmingly approved a groundbreaking compensation package potentially worth $1 trillion for Musk—the largest in corporate history—contingent on achieving ambitious targets, such as elevating the company's market capitalization to $8.5 trillion and delivering millions of vehicles, robots, and robotaxis over the next decade. This endorsement reinforces investor faith in Musk's strategy to pivot Tesla toward artificial intelligence-driven growth, despite ongoing legal considerations regarding prior awards.

Further enhancing Musk's portfolio, his artificial intelligence startup xAI is reportedly in advanced negotiations to secure $15 billion in equity funding at a $230 billion valuation, more than doubling its earlier $113 billion mark. This potential influx underscores the intense demand for AI advancements, positioning xAI as a formidable competitor in the field. Representatives from Musk's companies have not commented on these developments, but the collective valuations across his enterprises continue to propel his wealth into stratospheric territory.

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