THE JANUARY ANOMALY AND ANOMALIES IN JANUARY
Prior research finds that stocks earn significantly higher returns in January compared to other months, with the effect most often attributed to tax-motivated selloffs in December leading to price reversion in January. We examine how patterns in turn-of-the-year performance impact prominent return anomalies. We find that short-term reversals strengthen while momentum changes sign at the turn of the year, and such patterns are more pronounced following years of recession and poor market performance, consistent with tax-loss selling playing a key role. Although additional factors are likely to contribute to the overall effect, no significant change in anomaly performance occurs midyear, casting doubt on window-dressing as a primary driving force.
Copyright (c) 2023 Steven Kozlowski, Alex Lytle
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