Pengaruh Pengunnuman Bividen Terhadap Volatilitas Return Ssham

This study aims to examine the effect of dividend announcements on stock return
volatility in companies included in the LQ45 index on the Indonesia Stock Exchange,
particularly during the post-COVID-19 pandemic recovery period. Dividend information is
regarded as an important signal for investors and can trigger market reactions that impact
stock price fluctuations. The method used is an event study with the Wilcoxon Signed-Rank
test to measure differences in stock return variance before and after dividend announcements
over 5-day and 15-day periods. The results show a statistically significant increase in
volatility during the 5-day period following the announcement (p = 0.043), but no significant
change during the 15-day period. These findings indicate that dividend announcements trigger
short-term reactions but do not have a lasting impact. This reflects that the Indonesian market
is not yet fully efficient, and the price adjustment process to dividend information is still
occurring gradually.

Keywords: Dividend announcement, Return volatility, Event study, Post-pandemic, Market
efficiency.