How long does it take to open an account? 17 February 2023 16:42 Updated It typically takes 24-48 hours to open an account, once all required subscriber information is submitted and reviewed. Related articles How old do I have to be to open an account? What type of ID do I need? Where is my portfolio? What can I trade with Prometheum ATS? How do I deposit money (send a wire into my account)?