Just over a month after completing the largest initial public offering in history, SpaceX shares slipped below their $135 IPO price for the first time on Wednesday, raising questions about whether the AI and space launch company can sustain the astronomical valuations that made Elon Musk the world's first trillionaire.

The stock fell as much as 1.5% to $134 intraday before recovering slightly to close at $135.27, barely above the offering price that SpaceX sold shares to investors in June. The decline marks a stark reversal from the euphoria that greeted the company's Nasdaq debut, when shares rocketed higher in early trading and pushed Musk's net worth past the trillion-dollar threshold.

From Record Highs to Reality Check

SpaceX raised $86 billion in its June 12 IPO, shattering previous records and valuing the combined rockets-to-AI company at approximately $1.25 trillion. The offering capitalized on intense investor appetite for exposure to both the commercial space industry and artificial intelligence, following SpaceX's February 2026 acquisition of xAI.

At their peak, SpaceX shares traded nearly 52% above the IPO price, driven by retail investor enthusiasm and bullish analyst coverage. However, the past several weeks have seen a steady erosion of those gains as broader market concerns about AI valuations intensified.

The Valuation Question

Wednesday's decline reflects growing skepticism about whether SpaceX can justify its lofty valuation. The company operates two distinct but interconnected businesses: its market-leading rocket launch services, including the reusable Falcon 9 and next-generation Starship; and xAI, the artificial intelligence venture that has become increasingly intertwined with both SpaceX and Tesla.

Critics argue that the combined entity trades at a significant premium to comparable space and AI companies, pricing in success across multiple unproven ventures. Starship, while revolutionary in concept, has yet to achieve the cadence of launches necessary to support SpaceX's ambitious Mars colonization and Starlink expansion plans. Meanwhile, xAI competes against well-funded rivals including OpenAI, Google DeepMind, and Anthropic for AI supremacy.

Broader Tech Selloff

SpaceX's struggles come amid a wider rotation away from technology stocks that has gathered momentum in recent weeks. Semiconductor shares have been particularly hard hit, with investors questioning whether AI infrastructure spending can sustain current levels. The Nasdaq has pulled back from record highs as market participants reassess risk across the technology sector.

For SpaceX, the timing proved unfortunate. The company went public near the peak of AI enthusiasm, capturing maximum valuation but also maximum vulnerability to any shift in sentiment. The stock's failure to hold above its IPO price will test investor conviction in the company's long-term thesis.

Implications for IPO Market

SpaceX's wobble carries implications beyond the company itself. A string of high-profile companies have been waiting in the wings to test public markets, using SpaceX's successful debut as evidence that investors remain hungry for growth-oriented offerings. Wednesday's decline may give some pause.

Private companies contemplating IPOs must now weigh whether the window of favorable market conditions is closing. Those that delayed offerings hoping for even higher valuations may find themselves caught between deteriorating sentiment and the need for liquidity.

Musk's Trillion-Dollar Test

For Musk personally, the stock's performance represents an early test of his status as the world's first trillionaire. While his net worth remains comfortably above that milestone thanks to holdings in Tesla and other ventures, SpaceX represents the crown jewel of his empire—the vehicle through which he plans to make humanity a multi-planetary species.

The company's next earnings report, scheduled for early August, will provide the first detailed look at post-IPO financial performance. Investors will scrutinize launch cadence, Starlink subscriber growth, and any updates on the xAI business integration. Strong results could quickly erase recent losses; disappointing numbers might trigger further selling.

For now, SpaceX remains one of the most watched stocks on Wall Street. Wednesday's slip below the IPO price is a reminder that even the most anticipated offerings must eventually prove their worth in the cold light of quarterly earnings. The dream of Mars may be eternal, but stock prices operate on a shorter timeline.