SpaceX’s planned Nasdaq listing on Thursday, June 12, is set to become the largest IPO in history, with an expected volume of around $75 billion — far surpassing the previous record holder, Saudi Aramco, from 2019. Analysts put the space company’s market capitalization at $1.75 to $2 trillion. But beyond the headlines about Elon Musk potentially becoming the world’s first trillionaire, a different question looms for retail investors: how quickly — and above all, through what mechanism — does this stock end up in the broad index funds that millions of people pay into every month?
The “Fast Entry” rule as the back door
Newly listed companies have traditionally had to clear a so-called seasoning period of three to twelve months before being admitted to a major index — a window intended to support price discovery and stabilization. For comparison: it took Facebook roughly seven months to be included, Airbnb about a year, and Tesla some three years.
That is exactly what is now changing. Effective May 1, 2026, a revised Nasdaq methodology allows any newly listed company ranked among the 40 largest by market capitalization to enter the Nasdaq-100 after just 15 trading days. The minimum free-float requirement was eliminated outright in the process. At its expected valuation, SpaceX would clear that threshold with ease — meaning inclusion is likely to follow in early July.
Critics point to the close timing between the rule change and the IPO plans. According to the WSJ, SpaceX advisers had reached out to index providers to discuss how the company and other richly valued startups might join key indexes sooner than usual. S&P Dow Jones and FTSE Russell are examining comparable easements as well.
The forced purchase
For passive funds, index inclusion is not a choice but an obligation: once a stock enters a benchmark, the funds tracking that index are effectively required to buy it — and this mechanical demand reaches the index funds and ETFs that underpin millions of retirement and brokerage accounts. Several institutions estimate that the Nasdaq-100 inclusion alone would trigger forced buying of roughly $22 to $27 billion by ETFs and index funds — partly financed by offloading existing positions such as Apple, Microsoft, or Nvidia.
The reach extends beyond the Nasdaq, too: SpaceX is large enough to be admitted to the MSCI World Index, the global standard benchmark for worldwide equity ETFs. MSCI’s methodology permits accelerated inclusion for sufficiently large IPOs outside the usual quarterly rebalancing date; the actual index impact, however, is likely to be dampened initially by the small free float.
Danish pension fund banishes the stock in advance
While the index machinery moves toward inclusion, one institutional investor has already pulled the rip cord. Danish pension fund Akademikerpension placed SpaceX on its exclusion list ahead of the IPO, citing both valuation and governance structure.
On valuation, the fund said market indications pointed to at least $1.8 trillion, while it considered any valuation above $1 trillion hard to justify. Investors, it argued, are being asked to accept an unprecedentedly low risk premium for a highly uncertain company.
The criticism of corporate governance was even sharper — the fund described it as extremely deficient. The backdrop: Musk is expected to control more than 80 percent of the voting rights while simultaneously serving as CEO, chief technology officer, and chair of the board. In the fund’s assessment, this extreme concentration of power prevents the board from exercising meaningful oversight and makes it virtually impossible to remove Musk against his will.
What remains
For actively investing funds like Akademikerpension, an exclusion is possible — for passive ETF savers holding a Nasdaq-100 or MSCI World fund, it generally is not. Through index inclusion, they automatically become SpaceX shareholders without any action of their own, regardless of how they assess valuation and governance. The debate over the “Fast Entry” rules thus touches a fundamental question of passive investing: who actually decides what belongs in the broad market — and at what price it gets bought?
