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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2502.20489 |
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| _version_ | 1866915469401784320 |
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| author | Lv, Linying |
| author_facet | Lv, Linying |
| contents | This paper documents novel investment value in analyst report text. Using 1.2 million reports from 2000-2023, I embed narratives with large language models (LLMs) and fit machine learning (ML) forecasts of future long-term returns. Portfolios formed on the report narrative forecasts earn sizable and significant performance that is incremental to analysts' numerical outputs and to a broad set of established factors and characteristic-based predictors. The effect is stronger after adverse news and is amplified for growth stocks with aggressive investment. To open the black box, I apply a Shapley decomposition that attributes portfolio performance to distinct topics. Analysts' strategic outlook contributes the most to portfolio performance, especially forward-looking fundamental assessments. Beyond providing direct evidence that analyst narratives contain value-relevant assessments that diffuse into price over time, this study illustrates how interpretable LLM-plus-ML pipelines can scale and augment human judgment in investment decisions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_20489 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Do Sell-side Analyst Reports Have Investment Value? Lv, Linying Pricing of Securities This paper documents novel investment value in analyst report text. Using 1.2 million reports from 2000-2023, I embed narratives with large language models (LLMs) and fit machine learning (ML) forecasts of future long-term returns. Portfolios formed on the report narrative forecasts earn sizable and significant performance that is incremental to analysts' numerical outputs and to a broad set of established factors and characteristic-based predictors. The effect is stronger after adverse news and is amplified for growth stocks with aggressive investment. To open the black box, I apply a Shapley decomposition that attributes portfolio performance to distinct topics. Analysts' strategic outlook contributes the most to portfolio performance, especially forward-looking fundamental assessments. Beyond providing direct evidence that analyst narratives contain value-relevant assessments that diffuse into price over time, this study illustrates how interpretable LLM-plus-ML pipelines can scale and augment human judgment in investment decisions. |
| title | Do Sell-side Analyst Reports Have Investment Value? |
| topic | Pricing of Securities |
| url | https://arxiv.org/abs/2502.20489 |