Analysis
Three of the most valuable private companies in history are now moving through public-market processes simultaneously, setting up what could be 2026's single biggest test of how public investors actually price frontier AI and space infrastructure once real trading, rather than private funding rounds, is doing the valuing.
SpaceX has already crossed the finish line: it priced its IPO at $135 a share and closed its first trading day near a $2 trillion valuation, the largest public debut in history by a wide margin. Anthropic confidentially filed its own IPO paperwork at a $965 billion valuation, following directly on the heels of a $65 billion funding round in late May that set that mark. OpenAI confidentially filed at an $852 billion valuation, though Reuters has since reported the company may now wait until 2027 to actually list rather than proceed on the faster timeline earlier reporting suggested.
The sequencing matters as much as the valuations themselves: SpaceX's actual trading performance is now the only real public-market data point for how investors price a company at this scale, and both Anthropic's and OpenAI's eventual listings will be measured directly against it whenever they price.
“That shift reflects Anthropic's own recent fundraising momentum and enterprise traction rather than any single dramatic event.”
The valuation gap between Anthropic and OpenAI is itself notable -- Anthropic's $965 billion mark now exceeds OpenAI's $852 billion, a reversal from earlier in the AI race when OpenAI's valuation consistently led. That shift reflects Anthropic's own recent fundraising momentum and enterprise traction rather than any single dramatic event.
For public-market and late-stage private investors, the sequencing of these three listings will likely set pricing benchmarks for the entire AI and space-infrastructure sector for years, the same way Facebook's and Google's IPOs became reference points for a full subsequent generation of tech listings.
What to watch: how SpaceX's stock performs in its first full quarter as a public company, whether OpenAI's reported 2027 timeline holds or slips further, and whether Anthropic's confidential filing converts into an actual public listing before OpenAI's.
