SpaceX Is the 5th Most Valuable Public Company in the World. Can It Overtake Nvidia, Alphabet, Apple, or Microsoft?

SpaceX debuted as the world's fifth-most-valuable company following its June 2026 IPO, with a market capitalization of $2.73 trillion. The stock has surged 35% since going public, placing it behind only four other tech giants in global valuation.

The Motley Fool warns that the post-IPO rally may not hold. Historical patterns show large IPOs typically decline once lock-up periods expire and insiders gain the ability to sell their shares. The publication advises against chasing the momentum driven by fear of missing out.

Instead, the recommended approach is dollar-cost averaging into the position or waiting for initial hype to dissipate before establishing exposure. The 35% gain since June reflects strong investor appetite for the space exploration and satellite communications company, but the $2.73 trillion valuation leaves little room for error if execution stumbles or insider selling materializes.

The lock-up expiration represents a concrete risk catalyst that could trigger profit-taking and increased volatility as early stakeholders and employees convert equity into cash.