New York City Mayor Zohran Mamdani used SpaceX's historic IPO — and founder Elon Musk's newly minted status as a trillionaire — to push policy. "Reason #1,000,000,000,000 why we should tax the rich," Mamdani wrote on X in response to Musk becoming the world's first trillionaire on Friday. Musk reached the financial milestone after SpaceX stock popped upon hitting the market on Friday, trading at $150 per share, above the company's initial offering of $135. Already the world's richest man, the