Anthropic is said to plan a UK share offering via RetailBook, collaborating with the platform to market its shares to UK retail participants as part of its massive IPO

Anthropic / Wikimedia Commons (Public domain) Anthropic is reportedly planning a UK share offering through the platform RetailBook as a component of its upcoming Initial Public Offering (IPO). This development suggests Anthropic’s intentions to broaden its investor base by targeting UK retail participants. Despite Anthropic’s significant financial metrics, including a reported $16.3 billion in revenue for the first half of 2026, the details of the IPO, such as share count and pricing, remain undisclosed. The move to involve RetailBook, however, has not been confirmed in official filings or reports associated with the IPO. Key Takeaways The reported collaboration with RetailBook suggests Anthropic’s strategic approach to involve UK retail investors in its IPO. Market participants appear to view this as a potential confidence booster for Anthropic’s market cap projections, with predictions indicating a valuation possibly reaching $2 trillion. Current market odds show a 29% likelihood that Anthropic’s market cap will be between $1.75 trillion and $2.0 trillion at the close on IPO day. What to Watch Observers should monitor any official confirmation from Anthropic regarding the RetailB...