Stock Markets June 8, 2026 07:08 PM

OpenAI Confidentially Submits U.S. IPO Filing, Joins Anthropic in Public-Market Push

Company has not set a timetable or disclosed offering size as market observers weigh implications for AI and capital markets

By Caleb Monroe
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OpenAI said it confidentially filed for an initial public offering in the United States, joining rival Anthropic in advancing toward a public listing. The company provided no timeline or details on the size or terms of any offering. Market participants say the potential OpenAI listing could draw more public capital into AI infrastructure, but timing will depend on regulatory developments, internal progress and how other large IPOs perform.

OpenAI Confidentially Submits U.S. IPO Filing, Joins Anthropic in Public-Market Push
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Key Points

  • OpenAI has confidentially filed for a U.S. initial public offering but has not set a timeline or disclosed the size or terms of any offering - impacting technology and financial markets.
  • Analysts say an eventual OpenAI listing could reinforce the narrative that artificial intelligence is infrastructure and attract more public capital into the AI sector - relevant to AI, software and public markets.
  • Observers note that regulatory developments, internal product builds and the market’s reception of other large IPOs such as Anthropic and SpaceX will influence OpenAI’s timing and execution - affecting capital markets and investor flows.

OpenAI announced on Monday that it has made a confidential filing for a U.S. initial public offering, a move that places it alongside Anthropic as both companies edge toward potential public listings amid strong investor interest in artificial intelligence.

The developer of ChatGPT said it has not yet chosen a timetable for the IPO and did not provide any information on the prospective offering's size or terms. Details on specific timing, scope and structure remain undisclosed.

Market observers and executives offered perspectives on what an eventual OpenAI listing could mean for capital markets and the AI sector.

MICHAEL ASHLEY SCHULMAN, PARTNER AT CERITY PARTNERS: "Undoubtedly, OpenAI is keeping options open as Anthropic edged ahead with its filing after a monster funding round, yet both giants operate on timelines dictated by their own regulatory whirlwinds and internal builds rather than copycat moves. For broader markets, an eventual OpenAI listing could accelerate the narrative that artificial intelligence is infrastructure, pulling more public capital into the sector; until then, expect the company to keep leveraging private advantages to maintain its lead."

GIL LURIA, MANAGING DIRECTOR OF D.A. DAVIDSON: "What OpenAI does not want is for the public market capital to exhaust itself. Not only are SpaceX and Anthropic ahead of it in line to IPO, large public competitors could also raise tens of billions of dollars each in public market secondary issuances, as Google just completed last week."

JOSEF SCHUSTER, IPOX CEO: "SpaceX, OpenAI and Anthropic are now engulfing onto the public markets to finance their massive growth. While the markets currently welcome the firms with open arms, they will be relentless in rewarding and punishing as their fundamental profile builds over time.Given that their IPO offerings characteristics diverge so much from the average U.S. IPO, including offering size and initial float, it is a given that their life as a publicly traded entity will be highly dynamic."

JAKE DOLLARHIDE, CEO, LONGBOW ASSET MANAGEMENT: "With SpaceX, everyone knows Elon Musk, everyone knows what they’re getting or think they’re getting. Anthropic and Open AI will have much more to do with what people are choosing to use personal entertainment or for work, as far as AI. Some use Claude and live and die by it, and some use Chat GPT and live and die by it, and so I think you’re going to get very specific investors who use those services who want to buy that stock."

ADAM SARHAN, CHIEF EXECUTIVE OF 50 PARK INVESTMENTS: "There’s nothing surprising here. They are likely waiting to see how the market reacts to the other largely anticipated IPOs before announcing the timing."

Commentators highlighted several dynamics that could shape the timing and impact of an OpenAI public offering. Some observers suggested that the pace of other related IPOs and secondary issuances by large public competitors may influence when OpenAI proceeds.

Others emphasized that regulatory developments and internal company builds are likely to determine timetables more than competitive positioning alone. The potential for an OpenAI IPO to reinforce the view of artificial intelligence as a form of infrastructure was also cited as a reason the listing could attract additional public capital into the sector.

Separately, market tools and valuation services are referenced by some investors seeking to assess potential opportunities tied to related companies. One such example raised in market commentary asks whether SPCX is a bargain, and points to valuation models used to appraise companies planning public offerings.

For now, OpenAI has confined itself to the confidential filing and has not made public any further specifics about timing or the economics of a prospective IPO. Until more information is disclosed, investors and market-watchers will rely on signals from related filings and broader capital-market activity to gauge the likely path forward.

Risks

  • Public market appetite could be reduced if other large IPOs or secondary issuances exhaust available capital, creating a risk for late entrants - impacting capital markets and technology IPOs.
  • Timelines for an OpenAI IPO are subject to regulatory reviews and the company’s internal development progress, creating uncertainty about when an offering might occur - affecting investor planning in the AI and tech sectors.
  • Divergent IPO characteristics (size, initial float) relative to typical U.S. offerings could lead to a highly dynamic performance post-listing, increasing volatility and uncertainty for investors - relevant to equity markets and institutional investors.

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