Are investors moonstruck? Lunar phases and stock returns

Kathy Yuan, Lu Zheng*, Qiaoqiao Zhu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

159 Citations (Scopus)

Abstract

This paper investigates the relation between lunar phases and stock market returns of 48 countries. The findings indicate that stock returns are lower on the days around a full moon than on the days around a new moon. The magnitude of the return difference is 3% to 5% per annum based on analyses of two global portfolios: one equal-weighted and the other value-weighted. The return difference is not due to changes in stock market volatility or trading volumes. The data show that the lunar effect is not explained away by announcements of macroeconomic indicators, nor is it driven by major global shocks. Moreover, the lunar effect is independent of other calendar-related anomalies such as the January effect, the day-of-week effect, the calendar month effect, and the holiday effect (including lunar holidays).

Original languageEnglish
Pages (from-to)1-23
Number of pages23
JournalJournal of Empirical Finance
Volume13
Issue number1
DOIs
Publication statusPublished - Jan 2006
Externally publishedYes

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