Fresh off its record-breaking IPO, SpaceX has surged 19.79% to become the world’s sixth-most valuable company — but its sky-high valuation faces growing skepticism.
SpaceX (SPCX) has extended its blistering post-IPO rally, cementing its place as the world’s sixth-largest public company by market capitalization and closing the gap with e-commerce and cloud giant Amazon (AMZN). The aerospace and AI firm, which debuted on June 12 in the largest initial public offering in history, has seen its shares climb 19.79% from its offering price, pushing its market value to $2.4 trillion. That puts it ahead of tech heavyweights including Broadcom, Meta Platforms and Tesla, and just shy of Amazon’s $2.65 trillion valuation — prompting speculation it could overtake the retail and cloud leader within days. Yet the rapid ascent has fueled fierce debate over whether the high-flying stock is running on fundamentals or speculative froth.
Backed by a $1.77 trillion valuation at listing, SpaceX’s rally has been supercharged by widespread FOMO — fear of missing out — among retail investors and speculative traders. That momentum could easily carry its market cap past Amazon’s in the near term, handing it the title of the world’s fifth-most valuable company. But analysts warn that gains driven by trading sentiment, rather than underlying business performance, are rarely sustainable.
Beneath the market euphoria, SpaceX’s valuation has stretched far beyond typical growth stock boundaries. The company generated $18.67 billion in revenue in 2025, a robust 33% year-over-year increase. Yet at $2.4 trillion, its market capitalization translates to a price-to-sales ratio of 128 — a level more commonly associated with meme stocks than established industrial and technology growth names.
Profitability remains a glaring weak point. After folding xAI — the parent of social platform X and AI model Grok — into its business this year, SpaceX posted a net loss of $4.94 billion for 2025. Profits from its Starlink satellite internet unit were entirely wiped out by losses in its space launch division and the newly integrated AI operations. With plans to ramp up AI investment further, the company is expected to stay in the red for the foreseeable future.
Notably, SpaceX sold less than 5% of its shares in the IPO. With heavy cash burn set to continue, the company will likely turn to secondary share offerings and additional debt to fund its operations, a move that would dilute existing shareholders.
Even under optimistic growth projections, SpaceX’s valuation remains stretched. Assuming revenue expands at a 30% compound annual growth rate from 2025 through 2028 — hitting roughly $41 billion in the final year — its forward price-to-sales multiple would still sit at 58, an extremely elevated level by industry standards.
The valuation gap is even starker when stacked against peers. Rocket Lab (RKLB), SpaceX’s rival in the orbital launch market, trades at 37 times its projected 2028 sales. AST SpaceMobile (ASTS), which competes in satellite internet services, fetches just 13 times its 2028 revenue forecast. Both firms are smaller than SpaceX but are growing faster. By that industry benchmark, SpaceX shares could lose half their value before reaching a fairly valued level.
While speculative fervor may briefly lift SpaceX past Amazon, the two companies operate on fundamentally different financial footing. Amazon, the world’s largest e-commerce and cloud infrastructure provider, trades at just 3 times this year’s sales and 28 times this year’s earnings, backed by consistent, durable profitability.
Analysts project Amazon’s revenue and earnings per share will grow at compound annual rates of 14% and 21%, respectively, over the coming years. Its e-commerce business is set to expand as it upgrades its logistics network and penetrates more international markets. Its Amazon Web Services division, which hosts many of the world’s leading generative AI platforms, stands to capture outsized gains from the global AI boom. Meanwhile, its fast-growing advertising business — powered by promoted listings and integrated ad placements — has emerged as a second high-margin profit engine alongside AWS.
Consensus estimates point to Amazon’s shares rising 42% to $350 over the next 12 months, which would push its market capitalization to $3.76 trillion. By that point, most analysts expect SpaceX’s valuation to have cooled to more reasonable levels, widening the gap between the two once again.
All told, SpaceX’s trillion-dollar market value is being driven largely by IPO hype and speculative trading rather than concrete earnings power or a defensible valuation anchor, giving it clear hallmarks of a bubble. For investors, chasing the post-IPO rally carries significant risk. A more prudent approach would be to tune out the short-term noise and wait for a valuation pullback before building a position.
