ChatGPT-based Analysis of Annual Reports: ChatGPT-4 was used to analyze FTSE100 annual reports (2015-2022), generating sentiment and complexity indices.
Impact of Sentiment Index: Higher sentiment scores lead to positive stock reactions and increased future ROA.
Impact of Complexity Index: Higher complexity scores result in negative stock reactions and lower future ROA growth.
Investor Belief Heterogeneity: Positive sentiment reduces investor disagreement, while complexity increases it.
Investment Implications: ChatGPT-driven textual analysis proves useful in enhancing investment decision-making.
Opinion
This study highlights the effectiveness of ChatGPT in analyzing the textual characteristics of annual reports, offering valuable insights for investors. Reports with higher sentiment scores enhance investor confidence, boosting firm performance and stock prices, whereas higher complexity makes information harder to interpret, leading to negative market reactions. Notably, positive sentiment reduces investor disagreement, while higher complexity increases it, underscoring AI-driven sentiment analysis’s ability to capture investment psychology and support strategy formulation.
Core Sell Point
ChatGPT-powered annual report analysis aids in predicting stock price reactions and corporate performance. Higher sentiment leads to positive market responses, while higher complexity results in negative reactions, making AI-driven sentiment analysis a valuable tool for improving investment strategies.
The Usefulness of ChatGPT for Textual Analysis of Annual Reports
This study examines the use of ChatGPT to analyze the textual complexity and sentiment of UK annual reports and investigates its impact on investment decisions. The findings indicate that the sentiment and complexity scores generated by ChatGPT contain economically significant information, influencing both stock price reactions to annual report releases and future profitability. Additionally, these indicators capture investor belief heterogeneity, providing insights into how investors process the textual content of annual reports. Ultimately, the study suggests that investors can utilize AI models like ChatGPT to analyze textual characteristics of annual reports and enhance investment decisions.
Key Research Methods
Data: Annual report PDFs of FTSE100 companies from 2015 to 2022 were collected.
ChatGPT-based Text Analysis: ChatGPT-4 was used to calculate sentiment and complexity scores for key sections of the reports (Chairman’s statement, performance highlights, corporate governance, and ESG disclosures).
Index Construction: Sentiment and complexity scores were processed using principal component analysis to create a Sentiment Index and a Complexity Index.
Regression Analysis: Sentiment and complexity indices were used as independent variables, while stock price reactions, future profitability, and investor belief heterogeneity were set as dependent variables.
Robustness Checks: Fixed effects for firms and years were included, and standard errors were clustered to ensure the stability of the results.
Key Findings
Useful Information: The sentiment and complexity indices generated by ChatGPT contain valuable information that influences stock price reactions and future profitability.
Impact of Sentiment Index: A higher sentiment index is associated with positive stock price reactions and increased future ROA (Return on Assets).
Impact of Complexity Index: A higher complexity index is linked to negative stock price reactions and lower future ROA growth.
Investor Belief Heterogeneity: The sentiment index negatively correlates with stock turnover and return volatility, suggesting that positive sentiment reduces differences in investor opinions. Conversely, the complexity index positively correlates with turnover, indicating that higher complexity increases disagreement among investors.
Conclusion
This study demonstrates that ChatGPT effectively analyzes textual characteristics of annual reports and extracts valuable information for investment decisions. Investors can leverage ChatGPT to assess the sentiment embedded in corporate disclosures and refine their investment strategies.
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