NEW YORK — The landscape of the stock market is witnessing a dramatic shift as SpaceX, the aerospace company founded by Elon Musk, has achieved a staggering valuation of $2.1 trillion following a robust 19.2% increase in its initial public offering (IPO) debut. This valuation positions SpaceX above major players like Exxon Mobil, Bank of America, and Coca-Cola combined, and whether one agrees with this valuation or not, the market seems to favor it.
If SpaceX can sustain its impressive value, it stands poised to join numerous significant stock indexes that track market performance. These indexes, created by the investment industry, serve to provide snapshots of market activity, which is particularly complicated given the numerous stocks participating in the U.S. market. The S&P 500 is the most recognized of these indexes, incorporating 500 of the largest U.S. stocks and serving as a benchmark for trillions of dollars in investments.
The reasons companies strive to be included in such indexes are clear: index funds are a popular investment vehicle, and joining an index can often lead to substantial increases in stock prices. Indeed, following the announcements of their membership in major indexes such as the S&P Dow Jones Indices or the Nasdaq, stocks often witness significant boosts in value. As of late, Nasdaq has eased regulations to allow large companies to join its Nasdaq 100 index after just 15 trading days, a notable change that has generated more discourse regarding how new entries are evaluated.
As funds that track indexes proliferate—over 1,000 existed as of last year, with 185 focused on the S&P 500—investors are increasingly depending on index funds as a lower-cost method of investment. These funds have also outperformed many actively managed funds in recent years. Reports indicate that only about 21% of actively managed U.S. stock funds managed to survive and outperform their stated index peers over the last decade, a trend that has led to a marked increase in investments in index funds compared to actively managed options.
In light of SpaceX’s IPO, other prominent players in the artificial intelligence sector—such as Anthropic and OpenAI—are also looking to enter the stock market, potentially eyeing valuations close to $1 trillion. These companies have ballooned in value due to significant backing from private investors, including pension funds and high-net-worth individuals, further complicating the investment landscape.
However, not all stock indexes are willing to adapt their criteria for the rapid influx of mega IPOs. The S&P 500 maintains stringent requirements, mandating that a stock must be trading on an eligible exchange for at least 12 months and demonstrating profitability over the last four quarters before gaining entry. SpaceX, despite its lofty valuation, reported a loss of $4.9 billion last year and an additional $4.3 billion in the first quarter of 2026, raising questions about its long-term profitability.
Concerns surrounding corporate governance have also emerged, particularly regarding Musk’s significant control as a major shareholder. Pension fund representatives from California and New York have expressed their apprehensions about Musk’s influence over SpaceX and have warned of the implications this could have on shareholders. They worry that his concentrated voting power could effectively render him irremovable from his position.
While index funds faithfully follow the indexes, this could place investors in a position where they own shares in companies they might not support, particularly if these companies are embroiled in governance controversies. For instance, despite continued criticism for its overvaluation, Tesla has maintained its place in the S&P 500. Even as some indexes implement tighter criteria regarding corporate governance, the S&P 500 ESG index notably excluded Tesla in 2022.
As developments continue to unfold, the intersection of rapidly rising valuations, corporate governance concerns, and the investment strategies employed by individuals will shape the evolving narrative of not just SpaceX, but of the broader stock market landscape. As the situation progresses, the potential implications for investors and their portfolios remain to be fully realized.
