J.P. Morgan does not provide specific details about the minimum deposit required to open a J.P. Morgan trading account on its website. Since J.P. Morgan’s platform is geared toward institutional investors and large-scale clients, the minimum deposit required to open a J.P. Morgan trading account is likely to be significant. For clients considering J.P. Morgan investment services, such as asset management or institutional investing, high initial deposits may be required to access the platform. Based on J.P. Morgan reviews, the bank's primary focus on high-net-worth individuals and corporations means that retail traders may find it difficult to engage with J.P. Morgan account services unless they meet certain financial thresholds. To ensure I meet the requirements, I would contact J.P. Morgan directly for clarification on deposit sizes for J.P. Morgan trading account.