OpenAI Stock & IPO 2026: Valuation, How to Invest, IPO Date

OpenAI filed a confidential S-1 registration statement with the SEC on May 22, 2026, targeting a public listing as early as September 2026 at a valuation between $852 billion and $1 trillion. The company is not yet publicly traded, but the filing marks the clearest signal yet that what could become the largest technology IPO in history is on a defined timeline.

Can you buy OpenAI stock? (Pre-IPO status)

OpenAI is not publicly traded as of June 17, 2026. There is no ticker symbol and no exchange listing yet. The company filed a confidential S-1 with the SEC on May 22, 2026, which begins the formal regulatory review process but does not set a listing date. Goldman Sachs, Morgan Stanley, and JPMorgan Chase are leading the underwriting, according to AI Weekly.

Retail investors will be able to purchase OpenAI shares once the company begins trading on a U.S. exchange, which the company is targeting for sometime in September to Q4 2026. Until then, access is limited to institutional investors and accredited individuals through secondary markets described below.

OpenAI valuation: what the S-1 reveals

OpenAI's final pre-IPO private round, designated Series G, closed in March 2026 at an $852 billion post-money valuation, according to company disclosures and financial reporting tracked by StartupHub.ai at /startups/openai. The S-1 is reported to target a listing valuation above $1 trillion, pending market conditions.

OpenAI CFO Sarah Friar confirmed in a January 2026 blog post that the company's annualized revenue rate exited 2025 above $20 billion. Multiple reports indicate annualized revenue has since crossed $25 billion. The company is projecting approximately $27 billion in cash expenditure in 2026, reflecting aggressive compute and talent investment.

How to invest in OpenAI before the IPO

Until OpenAI begins trading publicly, the main avenues for individual investors are accredited secondary markets. Accreditation is required: under SEC rules, an accredited investor must have a net worth exceeding $1 million (excluding primary residence) or annual income of at least $200,000 ($300,000 joint with a spouse) for the past two years.

Secondary platforms where OpenAI shares have historically appeared include Forge Global (forgeGlobal.com), EquityZen, and Hiive. These platforms facilitate transactions between sellers (often current or former employees holding vested shares) and accredited buyers. Prices are set by supply and demand and can differ substantially from the most recent private round valuation in either direction.

Some institutional asset managers offer structured products or special-purpose vehicles (SPVs) providing synthetic exposure to OpenAI. These carry additional layers of fees and complexity. Certain late-stage venture funds available to qualified purchasers also hold OpenAI positions.

Key risks of pre-IPO exposure: shares are illiquid until the listing, IPO pricing may differ from secondary-market prices, and employees who receive IPO shares are typically subject to a 180-day lockup post-listing. Carefully review any platform's terms and transfer restrictions before transacting.

When will OpenAI IPO?

OpenAI filed its confidential S-1 with the SEC on May 22, 2026, triggering a mandatory review period before the company can publicly release the filing and begin a formal roadshow. The company is targeting a listing on the Nasdaq as early as September 2026, with the window extending into Q4 2026 depending on regulatory review and market conditions, per reporting by Fortune and CryptoBriefing.

The underwriting team, Goldman Sachs, Morgan Stanley, and JPMorgan Chase, brings considerable IPO track record. OpenAI has previously cautioned that a listing timeline "may be a while," reflecting the complexity of the company's nonprofit-to-for-profit restructuring, which had to clear legal and regulatory hurdles as a precondition for the public offering.

Once the S-1 is publicly filed (typically a few weeks before the roadshow), investors will be able to review OpenAI's audited financials, risk factors, and use of proceeds. That document will set the definitive valuation range. Until then, all valuation figures circulating publicly are based on the most recent private round and deal-sourcing reports.

Frequently asked questions

What is OpenAI's valuation?

OpenAI's most recently disclosed valuation is $852 billion, from its final pre-IPO funding round (Series G) in March 2026. Its S-1 targets a listing valuation of $852 billion to over $1 trillion, depending on market conditions at the time of pricing.

Can you buy OpenAI stock?

Not yet through a standard brokerage account. Accredited investors can access pre-IPO shares via secondary platforms such as Forge Global, EquityZen, and Hiive. A public IPO is targeted for September to Q4 2026.

What is OpenAI's stock symbol?

OpenAI has not announced a ticker symbol. The company filed a confidential S-1 in May 2026 and has not yet disclosed its exchange or ticker.

When will OpenAI IPO?

OpenAI filed its confidential S-1 with the SEC on May 22, 2026, with Goldman Sachs, Morgan Stanley, and JPMorgan Chase as lead underwriters. The target listing window is September to Q4 2026, pending SEC review and market conditions.

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Not investment advice.