Short Sale, Stock Liquidity, and the Day-of-the-Week Effect: Evidence from the Taiwan Stock Market

摘要

In this paper, we revisit the day-of-the-week effect by examining the Taiwan stock market. Based on the daily data from 1991 to 2008, our results show that the Taiwan stock market exhibits a strong day-of-the-week effect. In particular, the return on Tuesday is negative and significant from 1991 to 1997, and the returns on the weekend are positive and significant from 1991 to 1997 and from 2001 to 2008. In agreement with other studies, our results also show that the Tuesday's effect is weaker in recent years. In an attempt to explain the day-of-the-week effect, we demonstrate that short sales do not seem to play a significant role, which is contrary to the findings of Chen and Singal (2003) who study the US stock market. However, stock liquidity (measured by turnover ratio) seems to be related to the day-of-the-week effect in the Taiwan stock market.