Will SpaceX or OpenAI IPO first?

Resolution Criteria

This market will resolve to "SpaceX" if SpaceX (Space Exploration Technologies Corp.) completes an Initial Public Offering (IPO) before OpenAI completes an IPO by December 31, 2027, 11:59 PM ET, as confirmed by official company announcements and credible news sources. This market will resolve to "OpenAI" if OpenAI completes an Initial Public Offering (IPO) before SpaceX completes an IPO by December 31, 2027, 11:59 PM ET, as confirmed by official company announcements and credible news sources. This market will resolve 50-50 if: - Neither SpaceX nor OpenAI completes an Initial Public Offering (IPO) by December 31, 2027, 11:59 PM ET; - Both SpaceX and OpenAI complete an IPO on the same calendar date (ET); or - By December 31, 2027, 11:59 PM ET, both companies become unable to complete an IPO, including due to acquisition, merger, or absorption by an entity that is already publicly traded. The IPO refers to the first sale of stock by the listed company to the public on any recognized stock exchange. The resolution source for this market is a consensus of credible reporting.

Prediction markets are tracking which of SpaceX or OpenAI will complete an Initial Public Offering first, with a deadline of 31 December 2027. Neither company has announced a confirmed IPO date, and volume remains difficult to characterise given the market's current early-stage configuration. Resolution requires one company to list on a recognised stock exchange before the other within the deadline window.

Market structure

The market offers two named outcomes — SpaceX first or OpenAI first — with a 50-50 fallback if neither IPOs by 31 December 2027, if both list on the same calendar date, or if either company is absorbed by an already-public entity before listing. Resolution is confirmed by a consensus of credible reporting and official company announcements. The deadline is 31 December 2027 at 11:59 PM ET.

Background

Both SpaceX and OpenAI rank among the most valuable private companies in the world and have been the subject of sustained speculation about potential public listings. SpaceX, founded by Elon Musk, has repeatedly deferred IPO discussions, with leadership citing a preference for remaining private. OpenAI has undergone significant structural transformation, converting from a capped-profit model towards a more conventional for-profit structure, a change widely discussed in the context of future fundraising and potential public market access. Neither company had announced a confirmed IPO timeline as of mid-2025. The question of which lists first carries implications for broader AI and space-industry investment flows, as both are considered landmark listings if they occur.

Key factors

OpenAI's ongoing corporate restructuring — shifting away from its original non-profit governance model — is a prerequisite many analysts identify as necessary before a public listing could proceed. The pace and legal complexity of that transition could accelerate or delay any IPO timeline. For SpaceX, the sequencing of its business units matters: Starlink has been separately discussed as a potential standalone listing vehicle, and whether a Starlink spin-off would qualify under this market's resolution criteria is a relevant ambiguity. Broader market conditions, including interest rate environments, technology sector valuations, and investor appetite for high-growth loss-making entities, create external dependencies for both timelines. Regulatory scrutiny — particularly around OpenAI's non-profit conversion and SpaceX's government contracting relationships — could introduce procedural delays. A simultaneous IPO scenario, while structurally unlikely, would trigger the 50-50 fallback. Acquisition of either company by a public entity before listing would also invoke the fallback clause.

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