The Spanish Securities Commission (CNMV) published an investor note on the use of artificial intelligence (AI) in financial investing, warning that publicly accessible online AI tools can produce convincing but inaccurate or misleading investment recommendations that may lead to poor decisions and significant losses. The note advises investors to seek multiple viewpoints and not rely solely on AI-generated outputs, to be sceptical of “get rich quick” claims and high-return promises linked to AI strategies, and to recognise that many public AI tools are not authorised or supervised by financial regulators and have no duty to act in the user’s best interest or provide advice tailored to personal circumstances. It also highlights the limitations of AI outputs, including reliance on outdated, incorrect or incomplete information, and flags privacy risks where tools may lack adequate safeguards for personal data. Particular caution is urged around fee-charging AI websites and apps offering “stock picking” or “stock signals”, alongside a reminder that market movements are extremely difficult to predict and that human judgement and, where appropriate, authorised professional advice remain important.