How Market Sentiment Drives Forecasts of Stock Returns

Roman Frydman, Nicholas Mangee, Josh Stillwagon

    Research output: Contribution to journalArticlepeer-review


    We reveal a novel channel through which market participants’ sentiment influences how they forecast stock returns: their optimism (pessimism) affects the weights they assign to fundamentals. Our analysis yields four main findings. First, if good (bad) “news” about dividends and interest rates coincides with participants’ optimism (pessimism), the news about these fundamentals has a significant effect on participants’ forecasts of future returns and has the expected signs (positive for dividends and negative for interest rates). Second, in models without interactions, or when market sentiment is neutral or conflicts with news about dividends and/or interest rates, this news often does not have a significant effect on ex ante or ex post returns. Third, market sentiment is largely unrelated to the state of economic activity, indicating that it is driven by non-fundamental considerations. Moreover, market sentiment influences stock returns highly irregularly, in terms of both timing and magnitude. This finding supports recent theoretical approaches recognizing that economists and market participants alike face Knightian uncertainty about the correct model driving stock returns.

    Original languageEnglish (US)
    Pages (from-to)351-367
    Number of pages17
    JournalJournal of Behavioral Finance
    Issue number4
    StatePublished - 2021


    • Fundamentals
    • Market sentiment
    • Model ambiguity
    • Stock-return forecasts
    • Structural change

    ASJC Scopus subject areas

    • Experimental and Cognitive Psychology
    • Finance


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