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Individual Investors and Stock Returns

Sofiane Aboura

The Journal of Investing | Jun 20, 2026

Abstract

Abstract

This article explores the relationship between the S&P 500 Index and the AAII Investor Sentiment Survey, the latter of which is compiled by the American Association of Individual Investors. The empirical analysis utilizes common risk factors, economic sectors, time-varying regressions, and wavelet local multiple correlation methodology to provide a comprehensive examination from July 1987 to October 2025, with subperiod analyses. The main finding of the study shows that the sentiment index of individual investors is particularly valuable in conveying information during bearish financial market conditions and is subject to horizon effects.

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Sofiane Aboura

first | Université Paris Cité | ORCID 0000-0003-1151-7008

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BibTeX

@article{Aboura2026Individual,
  title = {Individual Investors and Stock Returns},
  author = {Sofiane Aboura},
  journal = {The Journal of Investing},
  year = {2026},
  doi = {10.3905/joi.2026.010},
  url = {https://doi.org/10.3905/joi.2026.010}
}

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