Elon Musk became the world's first trillionaire on Friday after SpaceX's blockbuster IPO in New York, drawing an immediate and ferocious response from New York City Mayor Zohran Mamdani, who used Musk's own social media platform to renew calls to 'tax the rich.'
The news came after SpaceX, Musk's privately held rocket company, finally made its long‑anticipated debut on the public markets. Shares opened at $135 and quickly traded up to $150, handing Musk an unprecedented paper fortune linked to his controlling stake and catapulting him far beyond his already comfortable position as the world's richest man. Until today, that title alone had been enough to make him a lightning rod in US debates over inequality and tax policy.