The online trading platform Robinhood (HOOD.US) announced on Monday the official launch of a tax-free Individual Savings Account (ISA) for stocks and funds in the UK market. The company claims the account offers zero platform fees, zero commissions, low foreign exchange fees, and a 2% cash bonus on deposits until April 5, 2026. Robinhood pointed out that the ISA is the most popular long-term savings vehicle in the UK, but high fees, complex transfer processes, and outdated platforms have deterred many investors. The new account will provide UK customers with access to invest in approximately 5,000 US-listed stocks and depositary receipts, supporting both whole-share and fractional-share trading. Mizuho Securities analyst Dan Dolev wrote in a client note, "Given the product's widespread popularity and Robinhood's significant potential among younger customers (aged 18-34), where ISA usage remains below the national average, we view the ISA launch as a major positive catalyst for Robinhood's international expansion efforts." Mizuho believes the total addressable market for Robinhood's new product is "extremely large." Dolev stated that the value of ISA holdings among UK adults is "likely well in excess of $1 trillion (cash plus stocks), while Robinhood's assets under custody as of the third quarter of 2025 are approximately $333 billion." Despite the new product launch in the UK, Robinhood's stock plummeted 9.8% in Monday afternoon trading, dragged down by a sharp weekend crash in the cryptocurrency market.