Elon Musk's SpaceX has filed confidentially with the Securities and Exchange Commission for what would be the largest initial public offering in history, targeting a staggering $1.75 trillion valuation.
The filing, confirmed by sources familiar with the matter, sets up a critical test of whether public markets will stomach the premium that private investors have paid for shares in the rocket and satellite company. At $1.75 trillion, SpaceX would debut with a market capitalization larger than Apple and Microsoft combined—unprecedented for a company that's never traded publicly.
The valuation question is the real story here. Private investors have spent years betting that SpaceX's dominance in commercial spaceflight and its Starlink satellite internet business justify stratospheric multiples. But public markets operate under different rules. Institutional investors will demand proof that revenue growth—estimated at $15 billion annually—can support a valuation that implies a price-to-sales ratio exceeding 100x.
For context, the previous record IPO was Saudi Aramco at $1.7 trillion in 2019, but that was a state-owned oil giant with proven reserves and decades of cash flow. SpaceX is a 22-year-old company betting its future on Mars colonization and global internet coverage from space.
The timing is notable. This comes as AI-era valuations face increasing scrutiny, with investors growing wary of companies burning cash on speculative technology bets. SpaceX's advantage is that it's already profitable from commercial launches and Pentagon contracts, but the Starlink business remains capital-intensive with uncertain unit economics.
Wall Street has been waiting years for Musk to take SpaceX public. The company has resisted, partly to avoid the quarterly earnings pressure that could conflict with its long-term Mars ambitions. That it's moving now suggests either pressure from early investors seeking liquidity or confidence that market conditions favor mega-cap debuts.
The numbers don't lie, but executives sometimes do. This IPO will reveal whether SpaceX's private market hype translates to public market discipline—or whether we're witnessing the peak of another valuation bubble.
