SpaceX's anticipated stock market debut — potentially the largest IPO in history — has reignited a familiar excitement on Wall Street. A $1.75 trillion valuation. Up to $75 billion raised. Headlines that make it sound like the investment opportunity of a generation. But beneath the spectacle lies a structural shift in how public markets actually work, and new academic research suggests that everyday investors arriving at the SpaceX party may find that the best refreshments were consumed long before they walked in the door.
The Numbers That Don't Make the Headline
SpaceX confidentially filed for its IPO on April 1, 2026, joining a queue that includes OpenAI and Anthropic — a trinity of high-profile offerings that promises to define this era's relationship between Silicon Valley ambition and public market capital. For the banks underwriting these deals, the fee revenue alone will be transformative. For founders and early-stage venture capitalists, these events represent the culmination of years of patient, high-risk capital allocation.
For the retail investor refreshing their brokerage app on IPO day? The math is considerably less flattering.
Brad Badertscher, a financial reporting and executive compensation researcher, recently completed a study of nearly 1,000 U.S. IPOs conducted between 2007 and 2022. The findings reframe how we should think about what an IPO actually is in 2026 — not a starting gun, but a finishing line, at least for the people who matter most to early value creation.
What "Going Public" Actually Means Now
The romantic version of an IPO traces back to companies like Apple and Amazon, which entered public markets early in their corporate lives and delivered extraordinary returns to ordinary shareholders who got in early. Apple went public in 1980, just four years after Steve Jobs and Steve Wozniak founded the company in a garage. The explosive growth — the products, the market dominance, the stock appreciation — happened in full public view, shared with anyone who bought shares.
That model is functionally obsolete. The average age of a company at IPO has more than doubled, from roughly four years in the early 2000s to nearly ten years by 2025. This is not a coincidence or a cultural shift in founder psychology — it's the direct result of an explosion in private capital. Venture capital and private equity firms now have the resources to sustain companies through multiple growth phases that previously required public market funding. Startups can raise hundreds of millions, sometimes billions, without ever filing an SEC prospectus.
The consequence is stark: by the time SpaceX or OpenAI reaches public markets, a decade of compounding growth has already been captured by private investors. The public offering represents their exit, not your entry into something nascent.
The Mechanism Behind the Curtain
Badertscher's research zeroes in on a specific financial instrument that reveals how value gets distributed before IPO day: cheap stock options. These are equity grants given to executives at a strike price far below what the company will eventually price its shares at when it goes public.
The mechanics are straightforward. An executive receives options to purchase shares at, say, $2 each. The company prices its IPO at $20. On the first day of trading, that executive can exercise those options, acquire shares at $2, and sell them near the IPO price — a transaction that requires no market risk and minimal personal capital. In Badertscher's dataset, the IPO price was, on average, 5.7 times higher than the exercise price of options granted in the preceding year. That is an enormous embedded gain, locked in before a single public investor purchased a single share.
To be fair, some of this price gap reflects legitimate factors. Private company shares are illiquid — they cannot easily be sold on an open market — which justifies pricing them at a discount to eventual public valuations. Real growth during the pre-IPO period also contributes. But Badertscher's team found that even after controlling for these factors, the gap remained substantial. The conclusion is difficult to escape: a significant wealth transfer occurs at IPO, flowing from future public shareholders toward insiders who were already in position.
Who Drives This Pattern?
The research found that venture capital-backed companies were significantly more likely to show these large option-price gaps. This makes intuitive sense. VC firms have a fiduciary obligation to return capital to their own investors, and the IPO is the primary mechanism for doing so. Granting executives deeply valuable options creates a natural alignment: both the VC and the executive have strong incentives to complete the offering at the highest possible price, as quickly as possible.
This is not inherently corrupt — incentive alignment is a legitimate corporate governance tool. But it does mean the IPO is being optimized for insider liquidity, not for public investor opportunity. Those are meaningfully different objectives, even when they occasionally produce the same outcome.
After the Bell Rings
Perhaps the most actionable part of Badertscher's research concerns what happens to companies after they go public. Companies with more heavily discounted pre-IPO options tended to invest less in capital expenditures and research and development following their debuts. They also delivered lower stock returns over longer time horizons.
The behavioral logic here is coherent. An executive holding options that became extraordinarily valuable at IPO has already captured significant wealth. The motivation to pursue aggressive, risky expansion diminishes when you have already won. Conservative growth strategies protect the value already realized; bold bets that could fail do not serve someone whose primary payday is already in the bank. Public shareholders, who arrived hoping to participate in the next phase of growth, find themselves holding equity in a company whose leadership has quietly de-risked.
This dynamic matters particularly for the three companies dominating current IPO conversations. SpaceX, OpenAI, and Anthropic are all companies where the technical ambition — reusable rockets, artificial general intelligence, frontier AI safety — implies ongoing massive capital deployment and risk tolerance. If the executive incentive structures that emerge from their public offerings mirror historical patterns, the companies that reach public markets may behave quite differently from the companies that private investors funded through their most audacious years.
What Should Investors Actually Do?
None of this means IPOs are worthless investments. Some public offerings do generate strong long-term returns, and market conditions at time of listing matter enormously. A company going public into a favorable sector environment with genuine competitive moats can still reward patient shareholders. The research describes averages and tendencies, not universal laws.
But the practical implication is real: investors who treat IPO day as the beginning of a growth story are working from an outdated mental model. The more accurate framing is that they are buying a stake in a mature company at the price insiders decided was appropriate for them to exit. That is a categorically different proposition from buying early-stage Amazon in 1997.
For the SpaceX offering specifically, the $1.75 trillion valuation figure deserves scrutiny. At that price, SpaceX would be valued comparably to Meta and larger than Berkshire Hathaway — companies generating tens of billions in annual profit. SpaceX's revenue, while growing impressively through its Starlink satellite internet business, operates at a fundamentally different scale. Investors should ask not just whether SpaceX is a remarkable company, but whether $1.75 trillion is the right price to pay for their particular entry point into the story.
The Deeper Structural Question
Badertscher's research quietly surfaces something larger than IPO mechanics: the question of who public markets are actually for anymore. For most of the twentieth century, public equity markets served as the primary mechanism through which ordinary investors participated in corporate growth. The shift toward private capital concentration means that the most explosive value creation — the kind that turned early Amazon shareholders into millionaires — increasingly accrues to institutional investors, wealthy individuals, and the executives themselves.
By the time a SpaceX or an OpenAI reaches the public, it carries a valuation that reflects a decade of extraordinary private-market growth already captured by a different class of investor. Public shareholders inherit the next chapter, which by historical pattern tends to involve slower growth, more conservative management, and returns that lag the fireworks of the early years.
The IPO boom of 2026 will generate enormous wealth — just not symmetrically, and not primarily for the people reading the breathless coverage and submitting orders through retail brokerage accounts. That asymmetry is not a scandal. It is the architecture of how modern capital markets actually function, and understanding it is the minimum requirement for investing in this environment with clear eyes.
