Anthropic, the AI safety company behind Claude, filed confidential IPO paperwork with the SEC on 1 June 2026. UK investors cannot buy Anthropic shares on the open market yet, but here is everything you need to know about how and when you will be able to, and what to watch before the listing.
Anthropic, the AI safety company behind Claude, filed confidential IPO paperwork with the SEC on 1 June 2026. UK investors cannot buy Anthropic shares on the open market yet, but here is everything you need to know about how and when you will be able to, and what to watch before the listing.
Can UK investors buy Anthropic shares now?
No. Anthropic is not yet publicly traded. The company filed a confidential draft S-1 with the SEC and has not announced a public listing date, ticker symbol, or share price.
Beware of pre-IPO products. Anthropic has explicitly warned that any unapproved sale or transfer of its private shares is void and will not be recognised on its books. Proceed with extreme caution with any scheme claiming to offer pre-IPO Anthropic shares.
Accredited investors may access shares through secondary-market platforms such as Forge Global, EquityZen, or Hiive, subject to availability, transfer restrictions, and significant risk. These are not suitable for most retail investors.
When can I buy Anthropic shares?
Anthropic is targeting a public listing as early as October 2026, with a broader window of late 2026 cited by sources. Once listed on the Nasdaq or NYSE, shares will be available to UK retail investors through any standard brokerage with US market access — no accreditation required.
Indirect exposure to Anthropic now
While Anthropic remains private, three publicly traded companies offer meaningful indirect exposure:
Amazon (AMZN)
Amazon is Anthropic's largest infrastructure partner and a major investor. Claude is deeply integrated into Amazon Web Services and Bedrock, and Amazon has committed billions in cloud computing capacity to Anthropic.
Alphabet / Google (GOOGL)
Alphabet is a strategic investor in Anthropic and a key compute partner. Google also competes with Claude via Gemini, giving Alphabet exposure to the AI market on multiple fronts.
Salesforce (CRM)
Reuters reported that Salesforce's stake in Anthropic was worth approximately $5 billion in June 2026. Salesforce has integrated Claude into its enterprise software stack, making it one of the more direct public-market proxies for Anthropic's enterprise growth.
Note: buying any of these shares means exposure to the full company, not Anthropic alone. Each carries its own risks.
How to buy Anthropic shares on IPO day
When Anthropic lists, here is the typical process for UK retail investors:
- IPO allocations go to institutions first. Shares are distributed to institutional investors during the roadshow. Retail investors typically access shares at or after the first day of trading.
- You need a brokerage account with US market access. XTB offers access to US-listed shares. Open an account and be ready before the IPO date.
- Read the public S-1 amendment. This will be filed approximately 15 days before the roadshow and is the first look at audited financials, risk factors, and ownership structure. Do not invest before reading it.
- Understand the lock-up period. After listing, insiders are typically restricted from selling for 180 days. When large tranches become eligible to sell, it can create downward pressure on the share price.
Key risks to be aware of
Anthropic has told investors it does not expect to sustain profitability beyond Q2 2026, citing planned infrastructure spending increases. The company is paying $1.25 billion per month to SpaceX for compute capacity — a cost that will weigh heavily on future margins.
The Long-Term Benefit Trust holds special Class T shares designed to elect a majority of the board over time, meaning public shareholders may not control the company even after listing. This structure is unusual for a public company and may limit shareholder influence.
At a target valuation near $1 trillion against annualised revenue of approximately $47 billion, Anthropic would be priced at roughly 21x forward revenue, elevated, but more moderate than OpenAI's comparable multiple.
Here is a full breakdown of the Anthropic IPO outlook, risks, and financials, what UK investors should expect, and how it compares with the OpenAI IPO which is targeting a listing in the same window.
Capital at Risk. Investment values may rise and fall. CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 72% of retail investor accounts lose money when trading CFDs with this provider. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.
OpenAI IPO - What UK Investors Should Expect
How to Buy OpenAI Shares - A Guide for UK Investors
Anthropic IPO — What UK Investors Should Expect
This content has been created by XTB S.A. This service is provided by XTB S.A., with its registered office in Warsaw, at Prosta 67, 00-838 Warsaw, Poland, entered in the register of entrepreneurs of the National Court Register (Krajowy Rejestr Sądowy) conducted by District Court for the Capital City of Warsaw, XII Commercial Division of the National Court Register under KRS number 0000217580, REGON number 015803782 and Tax Identification Number (NIP) 527-24-43-955, with the fully paid up share capital in the amount of PLN 5.869.181,75. XTB S.A. conducts brokerage activities on the basis of the license granted by Polish Securities and Exchange Commission on 8th November 2005 No. DDM-M-4021-57-1/2005 and is supervised by Polish Supervision Authority.
