SpaceX began trading on the Nasdaq on Friday 12 June under the ticker SPCX, in what was, by the size of the raise, the largest initial public offering on record. The company priced at 135 US dollars a share the evening before, raising roughly 75 billion US dollars at a valuation near 1.77 trillion, and the stock closed its first day up about 19 per cent at 160.95 dollars, lifting its market value above 2 trillion, after briefly trading more than 30 per cent higher during the session. The figure that pushed past the previous record, Saudi Aramco’s 29.4 billion dollar listing in 2019, is the headline. The mechanism underneath it is the more consequential story.
Because of rule changes made earlier this year, SpaceX will not wait the usual period before passive funds are required to buy it. It will be pulled into several major index families within weeks. That is what makes the listing relevant to people who have never looked at an IPO prospectus and have no intention of buying the stock directly.
What the fast-track actually changes
Nasdaq announced a methodology change in March that took effect on 1 May. Under the revised rules, a large newly listed company is evaluated at the end of its seventh trading day and can be added to the Nasdaq-100 after about 15 trading days, rather than waiting on the normal annual-review and seasoning process that previously kept recent listings out. The minimum free-float criterion was dropped in its earlier form. For SpaceX, the relevant detail is the weighting. Under Nasdaq’s methodology, a low-float security is now weighted at the lesser of its full market value or three times its free float. If the tradable float is roughly 75 billion dollars, that caps the benchmark value at about three times that figure, or roughly 225 billion dollars, as CNBC has reported.
The Nasdaq-100 is tracked by Invesco’s QQQ, among the most widely held exchange-traded funds in the world. Analysts cited by Yahoo Finance estimate that funds tracking the index will need to buy at least 7 billion dollars of SpaceX around its inclusion, which the 15-trading-day rule places in early July. FTSE Russell has made a comparable move, with SpaceX set to enter the Russell US indexes after the close on 26 June, and MSCI is reported to be adding the stock effective 29 June. BNP Paribas has put the combined passive buying across all affected funds at roughly 30 billion dollars.
The index that is not playing along
This is the distinction most worth holding onto. The S&P 500, the benchmark behind the largest pool of retirement and passive money in the United States, has declined to follow Nasdaq, FTSE Russell and MSCI. S&P Dow Jones Indices left in place its 12-month public-trading requirement, its profitability test under standard accounting, and its minimum free-float requirement, according to CNBC’s coverage of the decision. On those rules, and as Reuters has reported, SpaceX would not be eligible before June 2027 at the earliest, and only if it also clears the profit and float tests by then. The company posted a net loss of 4.94 billion dollars in 2025 on revenue of 18.67 billion, so the profitability test is not a formality.
So whether an ordinary investor’s money is buying SpaceX this month depends on what the fund holds. An S&P 500 tracker such as VOO, SPY or IVV will not own it through that benchmark for at least a year. A Nasdaq-100 fund would own it if the expected fast-entry inclusion goes ahead, while some total-market and global equity funds will pick it up sooner, depending on whether they track Russell, FTSE, MSCI, CRSP or another benchmark. To give a sense of scale, the position is small in the broadest vehicles: roughly 0.1 per cent of Vanguard’s Total Stock Market fund and about 0.6 per cent of QQQ, on the estimates CNBC gathered from index researchers. The claim that millions of savers will suddenly own SpaceX without choosing it is true for some funds and not others.
Why the thin float matters
About 3 to 4 per cent of SpaceX is in public hands. The lock-up is staggered rather than a single six-month cliff. Musk’s shares are locked for 366 days, while other holders face a phased schedule with some early-release provisions tied to the first earnings report, as MarketWatch and Reuters have described it. That thin float is the reason the three-times rule exists, and it is also why several analysts have flagged volatility risk. Index funds are required to buy a fixed weight of a stock with very few tradable shares, at the same time that some early backers become able to sell. When mechanical, price-insensitive demand meets a constrained supply, the price can move more sharply in both directions than the underlying business would justify. That risk falls on whoever holds the fund, including first-time investors who never selected the position.
The valuation argument that came with it
The listing arrived over open disagreement about what the company is worth. Morningstar analyst Nicolas Owens put a fair value of 780 billion dollars on SpaceX, a little under half the IPO valuation, and described the stock as significantly overvalued in a note published ahead of the debut. SpaceX is not profitable, and its own S-1 filing warns of a history of net losses that may continue. By valuation the company would rank among the largest in the United States; by revenue it would sit far lower. Senator Elizabeth Warren wrote to the SEC asking it to delay acceleration of SpaceX’s registration statement while the regulator examined the valuation, the governance structure and the risks to index-fund investors. At least one large European pension fund has said publicly that it will not hold the stock.
None of that prevented a strong first day, and the bull case is real enough on its own terms. SpaceX launched the majority of the mass sent to orbit last year and has cut launch costs steeply. The point is narrower. The passive money flowing in through index rules is entering near peak enthusiasm, on a valuation that a respected independent analyst reads as roughly double his own estimate. The funds buy because the rules tell them to, not because anyone has judged the price fair.
What to watch
Inclusion across the affected index families is set to land in late June and early July, and those dates will show how much forced buying the thin float can absorb without disorderly moves. SpaceX’s first set of public results is due in November, the first hard look at its financials the market has had. The staggered lock-up means tradable supply will grow in stages rather than all at once, and the 366-day lock on founder shares runs into mid-2027, which is also roughly the earliest the S&P 500 could admit the company, assuming it has by then cleared the profitability test it does not currently meet. Until then, the honest answer to whether you own a piece of SpaceX is that it depends on which benchmark your fund tracks, and that the answer changed for some of them this month.
