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Augmenting Fundamental Analysis with Large Language Models: A RAG-Based System for Generating Investor Briefs

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  • Bartosz Zi'o{l}ko
  • Kacper Dobrzeniewski

Abstract

In this study, we examine the opportunities brought by Large Language Models (LLMs) to various aspects of fundamental analysis of companies based on their reports as well as data and documents describing macroeconomic situation like GDP and inflation changes as well as documents filled to the U.S. Securities and Exchange Commission (SEC) which can be found in EDGAR. We were preprocessing those data and than sending via API to gpt-4o model in a Retrieval-Augmented Generation (RAG) like regime. We prepared as well a document describing an exemplar investor knowledge based on Kitchin cycles. We were scanning data important for analysis of 9 companies for 4 weeks. Using LLM we were producing automatic briefs about them. They were sent to nine participants who are individual investors to evaluate usefulness of such approach to data analysis.

Suggested Citation

  • Bartosz Zi'o{l}ko & Kacper Dobrzeniewski, 2026. "Augmenting Fundamental Analysis with Large Language Models: A RAG-Based System for Generating Investor Briefs," Papers 2607.09121, arXiv.org.
    • Handle: RePEc:arx:papers:2607.09121
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    File URL: https://arxiv.org/pdf/2607.09121
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