Elon Musk's rocket company SpaceX has rocketed up the rankings of the world's most valuable firms — but the headlines are split on whether that surge can last.

According to Yahoo Finance and The Motley Fool, SpaceX now ranks as the 5th most valuable company in the world, prompting the question of whether it could eventually overtake giants like Nvidia, Alphabet, Apple, or Microsoft.

The ambitions don't stop there. A separate Yahoo Finance report notes that Musk sees SpaceX reaching $1 trillion in annual revenue by 2030 — though that same piece argues an unnamed artificial intelligence stock could hit the trillion-dollar revenue mark first.

Not every signal is bullish. Another Yahoo Finance item warns that "SpaceX's IPO run may already be over — and it could get a lot worse," suggesting the recent run-up in value may be fragile rather than the start of a public-market debut.

The story also ties SpaceX to the broader wave of high-profile private tech firms. Investing.com groups SpaceX alongside AI leaders OpenAI and Anthropic in examining whether such companies could be added to the S&P 500, and what the investment fallout of that inclusion question might be.

Taken together, the sources paint a company whose valuation has climbed dramatically while big questions remain unresolved: whether it can keep climbing past the world's largest tech firms, whether its revenue goals are realistic, and how — or whether — ordinary investors will ever get a piece of it.

Why it matters: SpaceX's swelling valuation and its uncertain path to public markets sit at the center of a debate over how some of the most valuable companies on earth can stay just out of reach of everyday investors.