HomeFAQHow do I go about changing my registration information? Change customer information How do I go about changing my registration information? You can make changes through the AlpacaJapan Co., Ltd. website. Please log in to AlpacaJapan Co., Ltd. at https://sec.alpaca.ai/login/. Related Questions I would like to close my trading account. Please tell me about inheritance procedures. Could you tell me about the Certified Investor System? Back to FAQ