Anthropic and OpenAI IPO Tracker: Where Each Listing Stands
Quick answer (October 18, 2026): No. Neither Anthropic nor OpenAI has gone public, and neither has a ticker, a price range or a confirmed listing date. Anthropic confidentially submitted a draft S-1 to the SEC on June 1, 2026; reports say it plans to file publicly around October 26, start its roadshow on November 9 and price the following week, at a valuation of about $2 trillion. OpenAI confidentially filed on June 8, 2026 and has said it has not decided on timing; its CFO has told staff it will be a public company in 2027. SpaceX, the other mega-listing of 2026, went public on June 12 at $135 a share.
Updated October 18, 2026: Anthropic's reported filing and roadshow dates, its third-quarter revenue as reported from an investor meeting, OpenAI's new funding talks, and SpaceX's October 16 close added.
Anthropic has not gone public yet. The maker of Claude took the first formal step on June 1, 2026, when it confidentially submitted a draft registration statement on Form S-1 to the U.S. Securities and Exchange Commission. That filing is not public, so there is no prospectus to read, no share count, no price range and no ticker. Anthropic said the number of shares and the price "have not yet been set" and that any offering depends on market conditions. Everything about timing beyond that comes from press reports, and this page labels it that way.
OpenAI has not gone public either. It said on June 8, 2026 that it had confidentially submitted an S-1 and had "not decided on timing yet". Since then its leadership has pointed to 2027.
This page is a permanent reference for both listings. It separates what each company has confirmed from what has only been reported, gives the latest private valuation with its date and round, lists every funding round in order, and shows which public companies have disclosed stakes. It is updated whenever a filing, a new round or a credible report changes the picture.
Has Anthropic Gone Public? When Is the Anthropic IPO?
Anthropic is still a private company. Here is the difference between what is on the record and what is reported.
Confirmed by Anthropic:
- June 1, 2026: confidential draft S-1 submitted to the SEC for a proposed IPO of common stock. Shares and price not set.
- May 28, 2026: a $65 billion Series H at a $965 billion post-money valuation, its latest private price.
- Anthropic, PBC is a public benefit corporation, and its Long-Term Benefit Trust can select a growing share of the board.
Reported, not confirmed:
- Public filing around October 26, roadshow from November 9, pricing the following week, raising up to $100 billion at a $2 trillion valuation, with Morgan Stanley and Goldman Sachs as joint bookrunners (IFR, citing a person familiar with the process, October 2026).
- Formal marketing as soon as the week of November 9 and trading before Thanksgiving (November 26), with a debut no later than year-end (Bloomberg, October 1, 2026).
- Exchange: the Nasdaq, according to Business Insider (September 13, 2026).
- Banks: Morgan Stanley, Goldman Sachs, JPMorgan and Citi are among the banks working on the deal (Reuters via CNBC, September 5, 2026).
The dates have already moved once. In early September Reuters reported that marketing would start in mid-October at the earliest and that the prospectus would not become public until late September. Neither happened on that schedule.
One SEC rule makes the next step easy to watch. A company that filed confidentially must publicly file its registration statement at least 15 days before any roadshow. If the roadshow really starts on November 9, a public S-1 should appear on SEC EDGAR around October 25 or earlier. Until it does, every date above is a plan, not a fact.
Has OpenAI Gone Public? When Is the OpenAI IPO?
OpenAI is private. Its June 8 statement read: "We recently submitted a confidential S-1. We expect it to leak so we're just announcing it. We have not decided on timing yet; it may be a while because there are things we want to do that are likely easier as a private company."
Since then:
- Late June 2026: The New York Times reported that OpenAI might delay its debut until 2027 (CNBC).
- August 2026: CFO Sarah Friar told employees OpenAI "will be a public company in 2027", or sooner if "our business continues to inflect" (CNBC). An employee share sale of roughly $7 billion was completed at the $852 billion valuation.
- September 2026: Sam Altman said he doesn't "have a particular timeline in mind" and wants to "put safety and mission first" (CNBC, DevDay). Investors floated a new round at $1.2 trillion (CNBC, September 16), and Bloomberg reported talks to raise at least $30 billion at about $1.4 trillion (TechCrunch, September 29). No new round has been announced.
So the most specific signal for OpenAI is the CFO's "2027". There is no reported filing date, roadshow date or price range.
Anthropic, OpenAI and SpaceX: Status Table
| Company | Listing status (Oct 18, 2026) | Latest valuation, date, round and lead | Reported IPO timing | Structure notes |
|---|---|---|---|---|
| Anthropic | Private. Draft S-1 submitted confidentially on Jun 1, 2026 | $965B post-money, May 28, 2026, $65B Series H led by Altimeter, Dragoneer, Greenoaks and Sequoia | Public filing ~Oct 26, roadshow Nov 9, pricing the week after; up to $100B raise at ~$2T (IFR, Bloomberg) | Public benefit corporation (Anthropic, PBC); Long-Term Benefit Trust elects a growing share of the board |
| OpenAI | Private. Draft S-1 submitted confidentially, announced Jun 8, 2026 | $852B post-money, Mar 31, 2026, $122B round co-led by SoftBank with a16z, D. E. Shaw, MGX, TPG and T. Rowe Price-advised accounts | 2027, per the CFO's remarks to staff (CNBC); talks on a ~$1.4T private round (Bloomberg) | OpenAI Group PBC, controlled by the nonprofit OpenAI Foundation (26% stake at the Oct 2025 recapitalization); Microsoft ~27% |
| SpaceX | Public since Jun 12, 2026 · Nasdaq: SPCX | $135 IPO price = $1.77T valuation; closed at $146.03 on Oct 16, 2026 | Done: priced Jun 11, first trade Jun 12 | Elon Musk holds about 42% of the shares and about 82% of the votes (Class B = 10 votes) |
Anthropic Valuation and Funding Timeline
| Date | Event | Amount | Valuation | Lead / detail |
|---|---|---|---|---|
| 2023–2025 | Amazon convertible notes | $8.0B in total | — | Per Amazon's Q2 2026 10-Q |
| 2023 onward | Google investments | >$3B before Apr 2026 | — | ~14% stake reported before the April 2026 deal (CNBC) |
| Mar 3, 2025 | Series E | $3.5B | $61.5B post | Lightspeed Venture Partners |
| Sep 2, 2025 | Series F | $13B | $183B post | ICONIQ; co-led by Fidelity and Lightspeed. Run-rate revenue above $5B |
| Nov 18, 2025 | Microsoft and NVIDIA partnership | Up to $5B (Microsoft) + up to $10B (NVIDIA) | — | Anthropic commits to buy $30B of Azure compute |
| Feb 12, 2026 | Series G | $30B | $380B post | GIC and Coatue. Run-rate revenue $14B |
| Apr 20, 2026 | Amazon expansion | Up to $25B ($5B now) | $380B | Anthropic commits more than $100B to AWS over 10 years |
| Apr 24, 2026 | Google expansion | Up to $40B ($10B now) | $380B | Remaining $30B tied to performance milestones |
| May 28, 2026 | Series H | $65B | $965B post | Altimeter, Dragoneer, Greenoaks, Sequoia; includes $15B of earlier hyperscaler commitments ($5B from Amazon). Run-rate revenue above $47B |
| Jun 1, 2026 | Confidential draft S-1 | — | — | SEC review under way |
| Jun 22, 2026 | Micron agreement | Undisclosed | — | Micron a strategic investor in the Series H (our breakdown) |
| Jul 22, 2026 | AMD partnership | Up to $5B equity, in the future | — | Up to 2 GW of AMD Instinct MI450 GPUs from the first half of 2027 |
| Oct 2026 | IPO, reported | Up to $100B raise | ~$2T target | Not confirmed by Anthropic |
From $61.5 billion to $965 billion took 15 months. That is a 15.7-fold increase in the private price, and it is why a $2 trillion IPO target, if accurate, would still be roughly double the last round.
OpenAI Valuation and Funding Timeline
| Date | Event | Amount | Valuation | Lead / detail |
|---|---|---|---|---|
| Oct 2, 2024 | Funding round | $6.6B | $157B post | Thrive Capital; Microsoft and NVIDIA joined |
| Mar 31, 2025 | Funding round | $40B | $300B post | SoftBank ($30B) |
| Oct 2025 | Employee secondary sale | ~$10.3B offered | $500B | Price of the secondary, not new capital |
| Oct 28, 2025 | Recapitalization | — | — | For-profit becomes OpenAI Group PBC; Microsoft holds ~27% (~$135B); OpenAI Foundation 26% |
| Feb 27, 2026 | Round announced | $110B | $730B pre-money | Amazon $50B, NVIDIA $30B, SoftBank $30B |
| Mar 31, 2026 | Round closed | $122B | $852B post | SoftBank co-led; more than $3B from individuals through bank channels |
| Jun 8, 2026 | Confidential S-1 announced | — | — | "We have not decided on timing yet" |
| Aug 2026 | Employee share sale | ~$7B | $852B | Valuation unchanged |
| Sep 2026 | New-round talks, reported | ≥$30B | ~$1.2T–$1.4T | CNBC, FT, Bloomberg. Not announced |
OpenAI's private valuation rose 5.4-fold in 18 months, from $157 billion to $852 billion. In May 2026 Anthropic's $965 billion round put it ahead of OpenAI for the first time.
What Anthropic's Prospectus Shows So Far (as Reported)
The public S-1 is not out, so the only financial picture comes from reporters who have seen the confidential draft or attended investor meetings. Treat these as reported figures until the filing appears on EDGAR.
| Item | Reported figure | Source |
|---|---|---|
| 2025 revenue | Nearly $4.6B, up about 12-fold | Reuters via CNBC, Sep 28, 2026 |
| 2025 net loss | About $42B, including a ~$34B non-cash charge on financing instruments | Reuters, Sep 28 |
| 2025 operating loss | More than $8B, excluding liability writedowns | Reuters, Sep 28 |
| 2025 compute and infrastructure spend | $7.33B, over half of $12.65B in operating expenses | Reuters, Sep 28 |
| Future cloud and infrastructure obligations | $518B | Reuters, Sep 28 |
| Cash and short-term investments | $20.28B at Dec 31, 2025 | Reuters, Sep 28 |
| Customer concentration | Two customers were nearly a quarter of 2025 revenue | Reuters, Sep 28 |
| Q3 2026 revenue | $16.8B, up 45% from $11.6B in Q2 (Q1: $4.7B) | Reuters and FT, Oct 14–15, citing an investor at a pre-IPO meeting |
Run-rate revenue figures that Anthropic itself has published tell the same story of speed: about $1 billion at the start of 2025, more than $5 billion in August 2025, $14 billion in February 2026 and more than $47 billion in May 2026.
How the Structures Differ
Both companies are public benefit corporations, which means their directors must weigh a stated public mission alongside shareholder returns. The control arrangements are different.
- Anthropic, PBC pairs the PBC form with a Long-Term Benefit Trust: five financially disinterested trustees who select a portion of the board that grows over time, ultimately a majority. How the trust's powers carry over into a listed company will be one of the first things to read in the public S-1.
- OpenAI Group PBC sits under the nonprofit OpenAI Foundation. At the October 28, 2025 recapitalization the foundation held 26% (about $130 billion), Microsoft about 27% (about $135 billion) and current and former employees and investors 47%. That replaced the old capped-profit model.
- SpaceX is a conventional dual-class company: Class B shares carry 10 votes, which gives Elon Musk control with a minority of the economic interest.
SpaceX: The Mega-IPO That Went First
SpaceX is the only one of the three that has listed, and it is the comparison every Anthropic and OpenAI story now uses.
| SpaceX (SPCX) | |
|---|---|
| Public S-1 | May 20, 2026 |
| IPO price | $135, fixed before the roadshow |
| Shares offered | 555,555,555 Class A (plus 83,333,333 over-allotment) |
| Proceeds | $75B base deal, about $86B with the over-allotment |
| Valuation at the IPO price | $1.77 trillion |
| First trade | June 12, 2026, Nasdaq, opened at $150 |
| First-day close | $160.95 (+19%), about $2.1 trillion |
| Close on Oct 16, 2026 | $146.03, 8.2% above the IPO price |
The stock fell below its offer price in July before recovering. It is the most direct listed read on how public investors price a frontier AI-and-space story: SpaceX merged with xAI in February 2026. For how the listing interacted with Tesla shares around the debut, see our analysis of the June 12 options bet, and for how a classic tech IPO compounded afterwards, see Tesla's IPO: the date, the price and the 290x return.
Public Companies With Disclosed Stakes (Data, Not Advice)
Ordinary investors cannot buy Anthropic or OpenAI shares on an exchange today. What exists are listed companies that have disclosed investments in them. The table records those disclosures; it is not a recommendation, and a stake is usually a small part of each company's value.
| Company | Anthropic | OpenAI | SpaceX |
|---|---|---|---|
| Amazon (AMZN) | $8.0B in convertible notes plus $10B in Series G and H preferred stock; carried at ~$97.9B (notes) and ~$92.5B (preferred) on Jun 30, 2026; up to $15B more available | $50B in Series C preferred, fully funded after Jun 30, 2026 | — |
| Alphabet (GOOGL) | >$3B, then $10B in Apr 2026 with up to $30B more on milestones. 10-Q: $124.3B of private equity "primarily" one company, which Bloomberg identified as Anthropic | — | About 4.9% (CNBC, Jun 12, 2026) |
| Microsoft (MSFT) | Up to $5B (Nov 2025) | About 27% as-converted at the Oct 2025 recapitalization | — |
| NVIDIA (NVDA) | Up to $10B (Nov 2025) | $30B in the 2026 round | — |
| SoftBank Group (9984.T) | — | $64.6B cumulative for about 13% once fully funded (Reuters, May 2026) | — |
| AMD (AMD) | Up to $5B equity committed for the future | — | — |
| Micron (MU) | Strategic investor in the Series H, amount undisclosed | — | — |
| Tesla (TSLA) | — | — | Holds SpaceX shares from its $2B investment in xAI |
Some listed companies are tied to Anthropic as suppliers or landlords rather than shareholders: Akamai signed an $11.6 billion, seven-year cloud contract in September 2026, and TeraWulf a 20-year data-center lease worth about $19 billion. Those deals move with Anthropic's compute spending, not with its share price.
Amazon's filing also states that it expects a customary lock-up after an Anthropic IPO. Each SimianX stock page above carries a continuously refreshed multi-horizon AI read, and a live analysis session can put several AI models on any of these tickers at once.
How to Read Anthropic and OpenAI IPO Headlines
- Confidential is not public. A draft S-1 lets the SEC review the financials privately. Nothing is final until a public S-1 appears on EDGAR.
- Watch the 15-day clock. The public filing must come at least 15 days before the roadshow, so the public S-1 date tells you the earliest roadshow date.
- Price range, then pricing, then trading. The range comes in an amended S-1 at roadshow launch; the final price is set the night before the first trade.
- "Valuation" can mean four things: a post-money round price, a secondary-sale price, a reported IPO target and the market value after the first trade. SpaceX shows how far they can differ: $1.77 trillion at $135, about $2.1 trillion at the first close.
- Run-rate is not annual revenue. Anthropic's $47 billion run rate in May 2026 sits next to $4.6 billion of reported 2025 revenue.
The size of these listings matters for the wider market as well. For context on how today's AI spending compares with past booms, see every tech bubble since 1929 and how much of their cash flow big tech now spends on AI.
Frequently Asked Questions
Has Anthropic gone public?
No. As of October 18, 2026 Anthropic is private. It confidentially submitted a draft S-1 to the SEC on June 1, 2026, but has not published a prospectus, a ticker or a price range.
When is the Anthropic IPO date?
There is no confirmed date. IFR reported that Anthropic plans to file publicly on October 26, start its roadshow on November 9 and price the following week; Bloomberg reported trading could begin before Thanksgiving (November 26). Anthropic has not confirmed either report.
What is Anthropic's valuation?
$965 billion post-money, set by the $65 billion Series H on May 28, 2026. Reports put the IPO target at about $1.8 trillion to $2 trillion.
When will OpenAI go public?
OpenAI has not set a date. It confidentially filed in June 2026; CFO Sarah Friar told employees the company "will be a public company in 2027", and Sam Altman said in September he has no particular timeline in mind.
What is OpenAI's valuation?
$852 billion post-money after its $122 billion round closed on March 31, 2026. An August 2026 employee share sale used the same price. Reported talks in September 2026 discussed about $1.2 trillion to $1.4 trillion.
Can I buy Anthropic or OpenAI stock now?
Not on a public exchange. Neither has a ticker. Several listed companies have disclosed stakes, including Amazon and Alphabet in Anthropic and Microsoft, SoftBank, NVIDIA and Amazon in OpenAI, as shown in the table above. That is a description of disclosures, not investment advice.
What is SpaceX's stock price?
SpaceX trades on the Nasdaq as SPCX. It closed at $146.03 on October 16, 2026, against an IPO price of $135 on June 12, 2026.
What exchange will Anthropic list on?
Anthropic has not said. Business Insider reported on September 13, 2026 that Anthropic had picked the Nasdaq, the exchange SpaceX chose (via Reuters). It stays unconfirmed until the public S-1 names the exchange.
How This Page Is Updated
Updated: October 18, 2026. This page is revised when Anthropic or OpenAI files publicly with the SEC, announces a price range or a funding round, starts trading, or when Reuters, Bloomberg, the Financial Times, the Wall Street Journal, CNBC or IFR report a material change. Confirmed facts cite company announcements or SEC filings; reported items name the outlet and date. Prices are official closes. Next scheduled check: the reported public filing date of October 26, 2026.
More reference tables like this one in the SimianX story library.
Related Reading
- When Did Tesla IPO? The Date, Price, and 290x Return
- Will SpaceX's IPO Pump or Drain Tesla Stock on June 12?
- AKAM Stock: $11.6B Anthropic Deal Needs $4.8B Before Revenue
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- TeraWulf Stock 2026: Inside Anthropic's $19B AI Lease
- AI Stocks Pull Back: OpenAI Doubts Hit Big-Tech Earnings
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- More in the AI and markets topic hub
References
- Anthropic — Confidential submission of a draft S-1 (June 1, 2026)
- Anthropic — Series H at $965B post-money (May 28, 2026)
- Anthropic — Series G at $380B post-money (February 12, 2026)
- Anthropic — Series F at $183B post-money (September 2, 2025)
- Anthropic — The Long-Term Benefit Trust
- SEC — Draft registration statement processing procedures (15-day rule)
- SEC EDGAR — Amazon Form 10-Q for Q2 2026 (Anthropic and OpenAI investments)
- SEC EDGAR — Alphabet Form 10-Q for Q2 2026
- Microsoft — The next chapter of the Microsoft–OpenAI partnership (October 28, 2025)
- Microsoft — Microsoft, NVIDIA and Anthropic partnerships (November 18, 2025)
- AMD — Strategic partnership with Anthropic (July 22, 2026)
- CNBC — OpenAI confidentially files for IPO (June 8, 2026)
- CNBC — OpenAI investors approach the company about a new round (September 16, 2026)
- Reuters via CNBC — Anthropic's IPO prospectus shows surging costs (September 28, 2026)
- Bloomberg — Anthropic targets an IPO before Thanksgiving (October 1, 2026)
- IFR — Anthropic pushes ahead with mid-November IPO (October 2026)
- CNBC — SpaceX IPO first-day trading (June 12, 2026)
