{"id":58329,"date":"2026-04-13T12:33:32","date_gmt":"2026-04-13T12:33:32","guid":{"rendered":"https:\/\/www.costacx.com\/la-inteligencia-artificial-falla-y-alucina-en-decisiones-de-inversion-en-bolsa-alerta-la-cnmv\/"},"modified":"2026-04-13T12:33:32","modified_gmt":"2026-04-13T12:33:32","slug":"artificial-intelligence-fails-and-hallucinates-in-stock-market-investment-decisions-warns-cnmv","status":"publish","type":"post","link":"https:\/\/www.costacx.com\/en\/la-inteligencia-artificial-falla-y-alucina-en-decisiones-de-inversion-en-bolsa-alerta-la-cnmv\/","title":{"rendered":"artificial intelligence fails and hallucinates in stock market investment decisions, warns cnmv"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Contents\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.costacx.com\/en\/la-inteligencia-artificial-falla-y-alucina-en-decisiones-de-inversion-en-bolsa-alerta-la-cnmv\/#Modelos_Evaluados\" >Models Evaluated<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.costacx.com\/en\/la-inteligencia-artificial-falla-y-alucina-en-decisiones-de-inversion-en-bolsa-alerta-la-cnmv\/#Errores_y_Supervision_Humana\" >Errors and Human Oversight<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.costacx.com\/en\/la-inteligencia-artificial-falla-y-alucina-en-decisiones-de-inversion-en-bolsa-alerta-la-cnmv\/#Rendimientos_Diferenciados\" >Differentiated Income<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.costacx.com\/en\/la-inteligencia-artificial-falla-y-alucina-en-decisiones-de-inversion-en-bolsa-alerta-la-cnmv\/#Recomendaciones_y_Conclusiones\" >Recommendations and Conclusions<\/a><\/li><\/ul><\/nav><\/div>\n<p>The Spanish Securities and Exchange Commission (CNMV) has published a revealing study on artificial intelligence in financial investments. Beyond being right or wrong in its predictions, it warns about an unexpected phenomenon: AI can hallucinate in its decisions, generating losses for investors.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Modelos_Evaluados\"><\/span>Models Evaluated<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The report takes an in-depth look at AI models such as ChatGPT, Gemini, DeepSeek and Perplexity. It highlights that these systems exhibit recurrent failures of reasoning and may even use outdated or fabricated information, which is referred to as hallucinations.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Errores_y_Supervision_Humana\"><\/span>Errors and Human Oversight<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The CNMV notes that simple and context-free consultations are the most error prone. It therefore stresses the importance of providing clear instructions and applying human supervision to avoid potential financial losses.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Rendimientos_Diferenciados\"><\/span>Differentiated Income<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The study details that AI shows better results when faced with more elaborate questions. For example, Perplexity stands out for its high returns on investments derived from complex queries, while ChatGPT is less reliable in advice on innocent questions.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Recomendaciones_y_Conclusiones\"><\/span>Recommendations and Conclusions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>It highlights that AI can improve financial returns, but warns of significant risks if appropriate instructions are not provided. Providing context and oversight is essential to maximise returns and minimise losses.<\/p>\n<p>In summary, artificial intelligence in finance presents both challenges and opportunities. It is crucial to understand its limitations and potential to optimise its use in investment decisions.<\/p>\n<p>Finally, the CNMV's warning invites us to reflect on the role of AI in the world of finance and the importance of active human supervision to ensure optimal outcomes and avoid unpleasant surprises in the market.<\/p>\n<p><em>Source: <a href=\"https:\/\/www.eldiario.es\/economia\/inteligencia-artificial-falla-alucina-decisiones-inversion-bolsa-alerta-cnmv_1_13138610.html\" target=\"_blank\" rel=\"nofollow noopener\">www.eldiario.es<\/a><\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>La Comisi\u00f3n Nacional del Mercado de Valores ha publicado un estudio revelador sobre la inteligencia artificial en inversiones financieras. M\u00e1s all\u00e1 d&#8230;<\/p>","protected":false},"author":1,"featured_media":58330,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[291],"tags":[292],"class_list":["post-58329","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias-ia","tag-inteligencia-artificial","category-291","description-off"],"_links":{"self":[{"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/posts\/58329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/comments?post=58329"}],"version-history":[{"count":0,"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/posts\/58329\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/media\/58330"}],"wp:attachment":[{"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/media?parent=58329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/categories?post=58329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.costacx.com\/en\/wp-json\/wp\/v2\/tags?post=58329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}