Interactive Brokers opens Anthropic IPO access to U.K. investors

The move fits Interactive Brokers' broader push to give global investors access to a wide range of markets and products through its technology platform. A prominent AI listing like Anthropic's gives the broker a chance to drive new account openings and deepen engagement among existing customers, which in turn supports commission revenue and client asset growth.

The backdrop is solid operating momentum. In October 2026, client accounts rose 34% year over year to 5.68 million, client equity climbed 19% to $928.6 billion, and daily average revenue trades reached 4.31 million, up 5% sequentially. Third-quarter 2026 adjusted net revenues grew 16% year over year to $1.87 billion.

Competition is already visible: Robinhood and Deutsche Bank are also facilitating access to the Anthropic IPO. Interactive Brokers' shares have lost 7.9% over the past six months against industry growth of 5.4%, and the stock trades at a forward P/E of 24.66 versus the industry average of 12.47. How much the IPO actually adds to results will depend on share allocations and subsequent trading activity, with market volatility a potential headwind.