SpaceX, Anthropic, OpenAI May Break the Megacap IPO Underperformance Pattern

The Quick Take

• Historical patterns show megacap IPOs typically slump in their first year of trading, but SpaceX, Anthropic, and OpenAI may be large and systemically important enough to break that pattern.
• The scale and strategic importance of these three companies could attract a different investor base than typical IPOs, potentially supporting post-listing share prices.
• Megacap IPO dynamics are under scrutiny as markets assess whether the AI investment narrative sustains valuations once public market price discovery begins.

The historical record of megacap initial public offerings has been consistently unflattering: large listings frequently underperform in the first 12 months after trading commences, as early investors take profits and public market price discovery reveals the gap between private market valuations and real-time earnings expectations. The Financial Post's analysis suggests SpaceX, Anthropic, and OpenAI may represent a category exception—companies whose strategic importance to national competitiveness and whose embedded position in global technology infrastructure create a structural buyer base that prevents the conventional first-year drift. SpaceX's monopoly position in launch services, and OpenAI's and Anthropic's roles as foundational AI model providers, are cited as differentiating factors.

For capital markets, these potential listings represent the largest wave of technology company IPOs since Alibaba and Meta went public, with combined implied valuations potentially exceeding $500 billion across the three companies. Investment banks that lead these offerings—likely Goldman Sachs, Morgan Stanley, and JPMorgan for SpaceX; possibly separate bookrunners for the AI labs—stand to collect historic underwriting fees. Existing public-market AI infrastructure companies (Nvidia, Microsoft, Google, Amazon) face a nuanced impact: successful IPOs validate the AI market's size and growth trajectory, but also introduce new publicly traded competitors for fund manager allocation budgets.

The critical trigger to watch is which of the three companies first files an S-1 registration statement with the SEC—that filing initiates the public IPO process and forces disclosure of financials that have been closely guarded during the private market phase. OpenAI's governance restructuring toward a for-profit structure is the regulatory precondition for a public listing; its completion date is therefore the key milestone. The macro variable is US equity market conditions: a sustained Nasdaq rally supports IPO pricing, while a technology sector correction—like the AI sell-off currently underway on Wall Street—could push listing timelines into 2027.

Synthesized from 1 source.