SpaceX, OpenAI IPOs Could Add $1 Trillion+ to US Equities by 2028
1h ago|4 min readStandard
Fazen Markets Editorial Desk
Collective editorial team · methodology
ipostock-market
Fazen Markets Editorial Desk
Collective editorial team · methodology
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Bloomberg reported on 14 June 2026 that the US stock market is poised for its largest expansion in a generation, driven by a wave of large-scale initial public offerings from companies like SpaceX and OpenAI. This reversal of a multi-year trend of shrinking public listings could add over $1 trillion in market capitalization to US indices, potentially reaching a magnitude not seen since the dot-com era's listing boom. The reported shift from a market of scarcity to one of increasing supply comes amid a 24-hour decline of 3.06% for DOT tokens, which carry a $1.61 billion market cap.
The last comparable surge in public listings occurred during the 1999-2000 dot-com bubble. In 2021, the US IPO market raised a record $155 billion, but that was followed by a stark contraction. The number of publicly listed companies in the US has halved since its 1996 peak of over 7,500, shrinking to roughly 4,000 by the mid-2020s. This long-term decline was driven by mergers, private equity buyouts, and a preference among high-growth tech firms to stay private longer.
The current macro backdrop, characterized by stabilized interest rates after the Federal Reserve's hiking cycle, has renewed investor appetite for growth equities. The primary catalyst for the impending supply expansion is the maturation cycle of venture capital-funded unicorns founded in the 2010s. These companies, including SpaceX and OpenAI, have reached a scale and capital intensity that necessitates public market access for further growth and liquidity for early investors.
Analyst estimates suggest the combined valuation of companies in the current IPO pipeline exceeds $1.5 trillion. SpaceX is reportedly targeting a valuation above $200 billion. OpenAI's valuation in its last private funding round exceeded $100 billion. Adding this scale of new equity would expand the total market capitalization of US public companies by over 7%. The S&P 500 index's total market cap is approximately $45 trillion.
The potential supply influx contrasts with the recent performance of other speculative assets. The Polkadot network's native token, DOT, traded at $0.9518 as of 19:54 UTC today. Its 24-hour trading volume was $66.89 million. This represents a 24-hour decline of 3.06%, underperforming major equity indices which have shown resilience. The shift signifies a reallocation of risk capital from purely speculative crypto assets back toward fundamental, cash-flow generating technology enterprises.
| Metric | Dot-com Era (1999-2000) | Current Pipeline (Est. 2026-2028) |
|---|---|---|
| Annual IPO Proceeds | ~$100 billion (peak) | Projected >$150 billion+ |
| Notable Additions | Amazon, Cisco (pre-bubble) | SpaceX, OpenAI, Stripe, Databricks |
| Market Cap Expansion | Added trillions | Could add $1+ trillion |
The influx of new supply will pressure valuations across the technology sector, particularly for companies with overlapping themes. Pure-play AI software vendors may face multiple compression as OpenAI becomes a direct, liquid public comparable. Aerospace and defense contractors like Lockheed Martin (LMT) and Northrop Grumman (NOC) could see investor attention diverted by SpaceX's lower-cost launch narrative. Secondary effects will benefit investment banks Goldman Sachs (GS) and Morgan Stanley (MS), which lead these capital raises, and exchange operators like Intermodal Group (ICE) and NASDAQ (NDAQ) which gain new listings.
A key counter-argument is that large IPOs often coincide with market tops, as seen in 1999 and 2021, by absorbing available liquidity. The risk is that this new supply arrives alongside slowing economic growth, diluting investor returns. Current positioning shows hedge funds and crossover funds reducing exposure to late-stage private companies in anticipation of public lock-up expirations. Capital flow is moving toward IPO underwriters and secondary market liquidity providers in preparation for the distribution phase.
The first major test will be SpaceX's official S-1 filing date with the SEC, expected in late 2026 or early 2027. OpenAI's public listing is contingent on resolving its unique corporate governance structure with Microsoft. The Federal Reserve's policy decisions on interest rates in Q3 and Q4 2026 will be critical for setting the valuation multiples these companies can achieve. A failure to cut rates could compress target IPO valuations by 15-20%.
Key technical levels to monitor include the Nasdaq Composite's support at 18,500. A break below this level amid large IPO launches would signal poor market absorption. For the IPO ETFs like Renaissance IPO (IPO), resistance sits at the $42 level. Successive large deals clearing this resistance would confirm healthy investor demand for new issues, a positive signal for broader equity liquidity explored in Fazen Markets' equity analysis.
New equity supply competes for the same pool of investor capital, which can dilute valuations for existing public companies in similar sectors. Historical data from the 2021 IPO wave shows the ARK Innovation ETF (ARKK) underperformed the S&P 500 by over 30% in the following 12 months as capital rotated into new issues. This dynamic is most acute for high-multiple, unprofitable tech stocks, which face direct comparables from the new listings.
Performance is mixed. Analysis of the 25 largest US IPOs since 2010 shows that 60% underperformed the S&P 500 three years after listing. Companies like Facebook (now Meta) and Visa succeeded, while Uber and Snap initially struggled. Success correlates strongly with profitability at the time of listing and a clear path to sustained free cash flow generation, metrics that will be scrutinized for SpaceX and OpenAI.
Retail investors typically receive minimal allocation in high-demand IPOs, with most shares going to institutional clients. The primary benefit is increased choice and liquidity in the public markets for leading innovation companies. Retail investors can gain exposure through broad market index funds, which will include these companies post-listing, or by waiting for the lock-up expiration period, which often provides a better entry point 90-180 days after the IPO.
The end of stock scarcity through massive new listings will test market depth and recalibrate valuations across the entire tech sector.
Disclaimer: This article is for informational purposes only and does not constitute investment advice. CFD trading carries high risk of capital loss.
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