Why Mega-IPOs Fail: The Alibaba Lesson for SpaceX & OpenAI

Core Insights

• Saudi Aramco's 1.5% float proves mega-IPOs often serve strategic goals beyond capital raising, not liquidity
• Alibaba's post-lockup stock crash (52% drop to $58) demonstrates the danger of massive share unlocks on IPO timelines
• Float expansion matters: Alibaba grew from 15% to 86% over a decade, while Aramco remains stuck at 2.4% after six years
• SpaceX, OpenAI, and Anthropic have a strategic advantage through years of tender offers that pre-released liquidity pressure
• The trillion-dollar IPO challenge: No market has successfully absorbed a mega-IPO where pure liquidity was the primary goal

Understanding the Aramco Exception: Why Size Doesn't Equal Success

When SpaceX, OpenAI, and Anthropic IPO liquidity challenges first surfaced, many industry observers pointed to a seemingly obvious counterargument: Saudi Aramco. The $29.4 billion raised in 2019 remained the largest IPO in history, with a market capitalization of $1.7 trillion at launch. Surely, the logic went, this mega-IPO proved that massive capital raises could succeed in modern markets.

But Aramco isn't a reliable proxy for what's coming. The details matter far more than the headline numbers. While Aramco raised an enormous amount of capital, it floated just 1.5% of the company at IPO. Six years later, that float has barely budged to 2.4%. The Saudi government maintains direct control of 81% of shares, while its sovereign wealth fund holds another 16%. This wasn't an IPO designed primarily to unlock liquidity for shareholders—it was a strategic decision to raise capital, enhance international credibility, and maintain state control simultaneously.

The comparison that actually matters is Alibaba. At $231 billion raised in 2014, it represents the next-largest IPO by far, and it's a far more relevant case study for understanding what mega-IPOs face when liquidity becomes the goal.

The Float Expansion Problem: Why Initial Offerings Are Just the Beginning

The difference between Aramco and Alibaba reveals something fundamental about mega-IPOs: the initial public offering is only the starting point. What matters is what happens in the years that follow.

Consider the numbers side by side. Saudi Aramco floated 1.5% at IPO and remains at 2.4% today. The structure was never designed for gradual liquidity expansion. Alibaba, by contrast, started with a real 15% float and has expanded dramatically to 86% over the subsequent decade. SoftBank Corp followed a similar trajectory, growing from 33% at IPO to 60% today. These companies had founders and early investors who genuinely needed to exit their positions over time, creating natural demand for share sales.

The implications are significant. When a company's float remains artificially constrained—whether by government control, founder preference, or structural design—the stock itself becomes less tradable. Fewer shares available means lower liquidity, higher volatility, and difficulty for institutional investors to build large positions. This wasn't a problem for Aramco because the IPO wasn't meant to facilitate shareholder exits. But for SpaceX, OpenAI, and Anthropic, which will have millions of employees and early investors desperate to sell, float expansion will be essential—and painful.

The Lockup Expiration Crisis: When Insiders Finally Sell

Float expansion tells only half the story. The other half, equally important and often overlooked, is the timing of when shares actually hit the market. This is where Alibaba's experience becomes a cautionary tale.

Most IPOs operate with a standard 180-day lockup period—a moratorium during which company insiders, founders, and early investors cannot sell their shares. This period is designed to prevent immediate dumping of stock and give the market time to absorb the IPO. But when the lockup expires, everything changes.

For Alibaba, the September 2015 lockup expiration released approximately 5 times more shares than the original IPO itself. The impact was immediate and severe. The stock had peaked at $120, riding high on post-IPO enthusiasm and strong market sentiment. But as those locked-up shares flooded the market, selling pressure became overwhelming. Within months, the stock crashed to $58—not only below its IPO price, but a staggering 52% decline from its peak. Shareholders who bought at the IPO price broke even at best. Those who bought after the IPO and before the lockup expiration suffered substantial losses.

This pattern isn't unique to Alibaba. It reflects a fundamental market dynamic: the initial excitement and enthusiasm of an IPO can only sustain prices for so long when massive share supplies are set to be released. The market begins pricing in that eventual selling pressure weeks or months before it actually occurs, which is why the stock often begins declining well before the lockup expires.

For mega-IPOs, the problem intensifies. A $10 billion IPO of a mega-cap company might float 5% of the company, leaving 95% locked up. When that lockup expires and insiders attempt to systematically exit their positions over the following months and years, the selling pressure becomes a constant headwind. The stock price must accommodate not just the initial public investors' desire for returns, but also millions of employee and founder exits happening continuously.

The Tender Offer Strategy: How Modern Tech Companies Are Avoiding the Lockup Problem

Understanding the Alibaba lesson makes recent developments at SpaceX, OpenAI, and Anthropic more strategically intelligent. All three companies have learned from history and are taking a different approach: rather than bottling up all insider liquidity for an eventual IPO lockup expiration, they're running regular tender offers years before going public.

SpaceX has conducted secondary sales and tender offers 2-3 times per year for several years now. These allow employees, early investors, and founders to gradually sell their shares at predetermined valuations. OpenAI completed a massive $10.3 billion secondary sale in early 2025, which alone represented more than enough liquidity for most investors who wanted to exit. Anthropic launched its first tender offer in early 2025 at a $350 billion valuation, beginning to unlock liquidity for its shareholder base.

The strategic genius here is straightforward: by conducting multiple tender offers and secondary sales over years before the IPO, these companies are releasing the pent-up selling pressure gradually. Rather than having billions of shares suddenly hit the market on lockup expiration day, creating a crash dynamic like Alibaba experienced, much of the exodus has already occurred. When the IPO finally happens, it won't be the initial release of insider liquidity—it will be one more step in a ongoing process.

This approach doesn't eliminate selling pressure entirely. But it distributes that pressure across years, rather than compressing it into months. This makes the stock price more stable and reduces the likelihood of a catastrophic post-lockup crash.

The Scale Problem: No Precedent for Trillion-Dollar IPOs

Despite all these strategic advantages, SpaceX, OpenAI, and Anthropic still face an unprecedented challenge: the sheer scale of what they're attempting.

Alibaba at $231 billion was enormous. It was a fifth to a tenth the size of SpaceX's target valuation. Yet even with years of founder leadership, strong business fundamentals, and global growth, Alibaba's stock crashed 52% following its lockup expiration. The market found it difficult to absorb the volume of shares being sold.

SpaceX is targeting a trillion-dollar valuation or higher. OpenAI's recent funding rounds value it at $100+ billion and climbing. Anthropic is at $350 billion. These are entirely different scales from anything the public markets have previously handled in the IPO context.

The challenge isn't just the initial IPO float. It's what happens in the years that follow. Alibaba's float eventually expanded to 86% as founders and early investors exited. SpaceX will eventually need to expand its float to accommodate the exits of Elon Musk's early investors, thousands of employees with stock options, and the company's founders. That process—whether happening through tender offers, secondary sales, or eventual public sales—represents tens or hundreds of billions of dollars in selling volume.

The question that haunts the market is simple: can the public markets actually absorb that volume without a significant price crash? With Aramco's controlled float and Alibaba's scale-and-crash pattern, there is no successful precedent for a trillion-dollar IPO where liquidity was actually the goal.

Conclusion

The Saudi Aramco IPO looks impressive on paper, but it reveals little about what mega-IPOs face when genuine liquidity is the goal. Alibaba provides the real lesson: even after massive capital raises, lockup expirations create selling pressure that can crash stock prices 50% or more. SpaceX, OpenAI, and Anthropic are smarter than their predecessors, using years of tender offers to distribute selling pressure before going public. But the market has never truly faced the challenge of absorbing a trillion-dollar IPO where shareholders urgently need to exit. Understanding these dynamics—the float restrictions, the lockup mechanics, and the unprecedented scale—is essential for anyone invested in, or betting against, the next generation of mega-IPOs.

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Original source: Why Saudi Aramco Isn't a Proxy for SpaceX

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