OpenAI Stock IPO: Expected Valuation, Timeline and Investment Options

OpenAI, the company behind ChatGPT, confidentially filed an S-1 registration statement with the SEC on May 22, 2026. This formally begins its process of going public. CNBC reported that Goldman Sachs and Morgan Stanley are leading the deal, with the company targeting a public debut “as soon as the fourth quarter” of 2026.¹ OpenAI said it is generating $2 billion in revenue per month, growing four times faster than Alphabet and Meta did at comparable stages, with enterprise now making up more than 40% of revenue and on track to reach parity with consumer by the end of 2026.² Though CNBC also pointed out that the company is “not yet profitable.”

If you are thinking about participating in an IPO, a financial advisor can help you evaluate whether it fits your overall allocation, risk tolerance and investment timeline.

What the Confidential S-1 Filing Means

OpenAI filed a confidential draft registration statement with the SEC on May 22, 2026. It came days after a California jury, on May 18, dismissed Elon Musk’s lawsuit on statute-of-limitations grounds. The dismissal removed a significant source of legal uncertainty as OpenAI evaluates a potential public offering.

A confidential S-1 lets a company begin SEC review before making its prospectus public. What it does and does not mean:

• SEC review process begins. SEC staff review the draft filing and may issue comment letters that the company must address before moving forward with an IPO.
• No public financial disclosure yet. Audited financials, the full risk-factor section and detailed operating disclosures remain private. Under SEC rules, the registration statement must be made public at least 15 days before an IPO roadshow begins.
• No price or share count set. OpenAI has not said how many shares it will offer, at what price, or on which exchange they will trade.
• The IPO is not guaranteed. A confidential S-1 is a step toward an IPO, not a commitment to complete one. OpenAI can delay or withdraw the offering depending on market conditions or other factors.

According to The Information, CEO Sam Altman has pushed for a public listing as early as late 2026, while CFO Sarah Friar has reportedly expressed concerns that OpenAI may need additional time to complete the operational and compliance work required for a public offering. ³  OpenAI’s official position is that the offering will depend on market conditions and other factors.

OpenAI’s Valuation History and What It Would Mean for the IPO Market

OpenAI’s private-market valuation increased from roughly $86 billion in early 2024 to $852 billion in March 2026, a nearly tenfold increase in about two years.

OpenAI’s listing would arrive alongside Anthropic, which was valued at $965 billion following its June 2026 funding round. ⁹ Additionally, SpaceX went public on June 12, 2026 and reached a market capitalization of approximately $2.1 trillion after its first day of trading.

Private valuations reflect terms negotiated between specific buyers and sellers, without the continuous price discovery of a public exchange. The IPO price will reflect public demand at listing, which may be above or below the private figure. 

Who Has Already Invested in OpenAI

However, by the time of the IPO OpenAI’s investor base will be unusually broad for a company that has not traded publicly. The March 2026 round distributed equity across institutional, strategic and individual holders:

• Microsoft: Roughly a 27% stake, built through investments beginning in 2019, plus model and Azure rights through 2032, the largest disclosed outside shareholder and the biggest pre-IPO dilution factor for new investors. (Set at the October 2025 recapitalization, before dilution from the latest round.) ¹⁰
• SoftBank: About $30 billion, among the largest in the round, much of it tied to OpenAI’s Stargate initiative, a $500 billion plan to build U.S. data centers. ¹¹
• Amazon: $50 billion in total, an initial $15 billion plus a further $35 billion contingent on OpenAI going public (reported as by the end of 2028) or reaching artificial general intelligence. ¹²
• Nvidia: About $30 billion, Nvidia has a financial and strategic interest in OpenAI’s continued GPU consumption at scale.

How to Invest in OpenAI Before and After the IPO

Access differs by accreditation status and tolerance for liquidity risk.

Retail investors today:

• ARK ETFs (ARKK, ARKW, ARKF): On March 31, 2026, ARK Invest reportedly bought about $240 million of OpenAI Group (Series C) shares across these three funds, each now holding roughly a 3% OpenAI position, the first brokerage-accessible, no-accreditation path to indirect exposure. ¹³ Note that buying an ARK ETF is not buying OpenAI at its private valuation; performance tracks the entire portfolio, not OpenAI’s share alone.
• Microsoft (MSFT): Roughly a 27% owner, with OpenAI technology embedded across Copilot, Azure and enterprise software, indirect exposure alongside a large, profitable enterprise business. ¹⁴
• Nvidia (NVDA): A $30 billion investor and primary GPU supplier, offering exposure to the compute layer behind OpenAI’s products. ¹⁵ The company is also a major supplier of the GPUs used to train and run OpenAI’s models, offering exposure to the computing infrastructure behind OpenAI’s products.

Some vehicles holding pre-IPO names trade far above net asset value. Destiny Tech100 (DXYZ), an exchange-traded closed-end fund, has at times traded at extreme premiums to NAV, reflecting scarce share supply, not underlying value, and leaving buyers paying a multiple of a holding’s implied private valuation. ARK’s Venture Fund (ARKVX), by contrast, is a closed-end interval fund that transacts at NAV; it has held OpenAI since 2024.

Secondary platforms such as Forge Global and EquityZen may offer access to OpenAI shares for qualified buyers (those meeting SEC net-worth or income thresholds). Liquidity is limited, minimums are high and prices may diverge from the latest primary round.

If OpenAI completes an IPO, shares will trade on a public exchange through any standard brokerage, no accreditation required. The public S-1 amendment filed before the roadshow will be the first look at audited financials, full risk factors and revised Microsoft terms. IPO shares are typically allocated to institutions during the roadshow; retail investors usually access them at or after day one. A 180-day lock-up typically restricts insiders from selling; when large tranches expire, selling pressure can weigh on the price.

Risks and Considerations for IPO Investors

If completed near reported valuation expectations, OpenAI’s IPO would be among the largest, most closely watched listings ever; the risks are significant.

Competition also matters for valuation. CNBC reported that Anthropic expects roughly $10.9 billion in Q2 2026 revenue and about $559 million in operating income, which would mark its first profitable quarter, while OpenAI was still loss-making in Q1. ¹⁷ It is worth noting that Anthropic itself has said this profitability may not be sustained, as it partly reflects a ramp-up discount on its compute deal with SpaceX. With public investors evaluating both at nearly the same time, Anthropic’s profitability timeline may shape the premium markets assign OpenAI.

A financial advisor can help assess whether a high-valuation, pre-profit IPO fits your allocation and risk tolerance, weigh direct post-IPO investment against indirect exposure through Microsoft, Nvidia or ARK ETFs, and plan around lock-up expiration.

Bottom Line

OpenAI’s confidential filing marks the beginning of what could become one of the largest and most closely watched IPOs in history, but many important details remain unknown. Investors still do not have access to audited financial statements, full risk disclosures, offering terms or a final valuation, all of which will be revealed only if and when the company publicly files its registration statement. Until then, anyone considering an investment should focus on the factors that will ultimately determine OpenAI’s long-term value as a public company, including its growth rate, path to profitability, competitive position and substantial capital requirements.

Investment Planning Tips

• A financial advisor can help you evaluate whether a high-profile IPO like OpenAI fits your portfolio, assess the risks of investing at a potentially elevated valuation and determine how much exposure, if any, makes sense within your broader financial plan. Finding a financial advisor doesn’t have to be hard. SmartAsset’s free tool matches you with vetted financial advisors who serve your area, and you can have a free introductory call with your advisor matches to decide which one you feel is right for you. If you’re ready to find an advisor who can help you achieve your financial goals, get started now.
• Interested in building a more diversified portfolio? Here’s a roundup of 13 investments to consider.

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