Private companies have no share price, so their value is set by the last deal. This list uses the latest deal we could confirm for each company and says what kind it was. Rankings such as CompaniesMarketCap cover listed companies only. Checked on 2026-10-31.
Funding round New money from investors at this price. Tender offer Investors or the company buy shares from staff at this price. No new money. Secondary sale Existing investors sell shares to new ones at this price. No new money. Reported round Reported by the press from people familiar with the deal; not announced by the company.
The full list, with sources
| # | Company | Value | Date | Set by | Country | Notes and source |
|---|---|---|---|---|---|---|
| 1 | Anthropic Claude AI models | $965B | May 2026 | Funding round | US | Filed for an IPO on 26 Oct 2026 (S-1). It leaves this list on its first day of trading. Series H, our Anthropic page |
| 2 | OpenAI ChatGPT and AI models | $852B | Apr 2026 | Funding round | US | The largest private funding round on record. $122B round, our OpenAI page |
| 3 | ByteDance TikTok and Douyin | $550B | Feb 2026 | Secondary sale | China | General Atlantic sold part of its stake. ByteDance has not raised new money since 2020. Reuters via Yahoo Finance |
| 4 | Databricks Data and AI platform | $190B | Aug 2026 | Funding round | US | $5B round led by Coatue; it was valued at $134B in February. CNBC |
| 5 | Stripe Online payments | $159B | Feb 2026 | Tender offer | US / Ireland | Secondary trading platforms priced it at about $172-177B in Jul-Aug 2026. Axios |
| 6 | Blue Origin Rockets and spacecraft (Jeff Bezos) | $130B | Jul 2026 | Reported round | US | First outside money: about $10B, value before the new money. Nasdaq / Bloomberg |
| 7 | Waymo Robotaxis (Alphabet) | $126B | Feb 2026 | Funding round | US | $16B round; Alphabet remains the majority owner. electrive |
| 8 | Revolut Digital bank | $115B | Jul 2026 | Secondary sale | UK | Up from $75B in Nov 2025. The CEO has talked about a listing around 2028. Tech.eu |
| 9 | Anduril Defence technology | $61B | May 2026 | Funding round | US | A staff tender in Oct 2026 was reported at about $90B. TechCrunch |
| 10 | Ramp Company cards and spend software | $60B | Oct 2026 | Reported round | US | Value before the new money. Ramp last announced $44B itself, in June 2026. FinTech Futures |
| 11 | Mistral AI AI models (Europe) | $24B | Sep 2026 | Funding round | France | €21B after the money, about $24B. Led by Samsung. Orrick |
| 12 | Kalshi Prediction markets | $22B | Mar 2026 | Funding round | US | Reported in talks at about $40B since June 2026. Fortune |
Left the list in 2026
- SpaceX: Listed on Nasdaq on 12 Jun 2026 (SPCX), after merging with xAI in February.
- Cursor: Bought by SpaceX on 14 Aug 2026 for $42.5B in stock.
- Shein: Listed in Hong Kong in Sep 2026 at about $26.5B, a quarter of its 2022 private value.
Want to test whether these prices make sense? Build your own value for Anthropic or OpenAI in the lab, or see how they stack up against listed giants on the compare page.
Questions about private company valuations
What is the most valuable private company in the world?
Anthropic, at $965 billion after its May 2026 round, just ahead of OpenAI at $852 billion. Anthropic has filed to go public, so OpenAI is likely to take the top spot once Anthropic lists. SpaceX was bigger but went public in June 2026.
How is a private company valued?
There is no share price, so the value comes from the last deal: a funding round, a tender offer or a sale between investors. It is the price per share in that deal times all the shares. It only changes when there is a new deal.
Why do sources give different valuations?
They pick different deals. Some use the last priced round, some a later staff tender or a secondary trade, and some quote the value before the new money and others after it. We show the latest deal we could confirm and say what kind it was.
Can I buy shares in a private company?
Usually not directly. Accredited investors can sometimes buy through secondary platforms or funds, at high minimums and with little information. Most people get exposure through listed investors, such as Alphabet with Waymo or Amazon and Google with Anthropic.
Spotted a newer deal? Tell us and we will update the list.
Not investment advice. Stonkometer is an educational calculator, not investment advice. Valuations depend entirely on the assumptions you choose. We are not a broker or adviser, and nothing here is a recommendation to buy or sell any security. Do your own research and consider a licensed adviser. Full disclaimer