SpaceX, Anthropic and OpenAI loom on the IPO horizon, offering investors a direct stake in AI model makers and a rocket firm. The three could command a combined $4 trillion valuation, about 6 % of the U.S. public‑equity market. That size mirrors the late‑1990s dot‑com surge, sparking concerns that the current tech rally might be topping out for investors today and analysts.

BCA Research data shows the S&P 500 often slips after major IPOs because new shares dilute capital at peak levels, leaving fewer funds to support the broader index. The market has absorbed recent issuances, yet the potential influx of AI equity could drain liquidity, especially as Federal Reserve tightening and reduced tech buybacks shrink available cash for investors and companies today.

If the IPO wave unfolds, the market could lose the recent upside momentum that investors have taken for granted. A surge in public‑equity supply would test the resilience of the S&P 500, exposing whether the rally can sustain itself amid rising interest rates and a tighter funding environment for companies and analysts today and future decisions in the equity market today.