Calendar Effects
Introduction
The calendar effect is the recurring cycle of stock market returns, which reflect seasonal patterns in investor behavior. Such effects are caused by investors responding in a predictable pattern to certain familiar events, such as tax payment dates. While calendar-based investment strategies are generally considered to be a long-term strategy, there is some evidence to suggest that the patterns of behavior that produce such effects also influence short-term market activity.
Definition
Calendar effects refer to recurring cycles of stock market returns. Seasonal patterns can be observed in stock price movements, sometimes as predictable as clockwork. Studies have determined that the magnitude of calendar effect in stock markets is substantial and significant. This phenomenon is caused by investors anticipating events and reacting in a predictable manner. Financial professionals often refer to “calendar anomalies” when predicting stock market performance.
Types of Calendar Effects
There are several types of calendar effects, many of which are well-documented and have been analyzed extensively by financial professionals. The most commonly studied calendar effects include the January effect, the Easter effect, the summer effect, and the tax effect. Each of these effects corresponds to a specific period of the year, and has unique characteristics that can impact the stock market.
January Effect
The January effect is a calendar-based stock market phenomenon that is observed to be more pronounced in the first few weeks of the new year. Research suggests that the market experiences a seasonal uptick in January, which is driven in part by investors who want to take advantage of the favorable tax benefits associated with making investments in the new year.
Easter Effect
The Easter effect is another calendar-based phenomenon. It is observed to be more pronounced around the Easter holiday, when stock prices tend to rise. It is believed that this is due in part to increased investor confidence during the holiday period, which drives up demand for stocks and other investments.
Summer Effect
The summer effect is an annual cyclical event observed in the markets during the summer months. This effect is driven in part by investor fears that the performance of stocks will suffer due to a lack of liquidity or decreased volume during the summer months.
Tax Effect
The tax effect is observed to be more pronounced around quarter-end or during the months of April and October due to the anticipation of taxes and tax-related decisions. This behavior is driven by investors wanting to take advantage of the tax breaks available for investments that are made on a timely basis throughout the year.
Conclusion
Calendar effects, such as the January effect, Easter effect, summer effect, and tax effect, are seasonal patterns in stock market returns. These effects are caused by investors responding in a predictable pattern to certain familiar events, such as tax payment dates. While calendar-based investment strategies are generally considered to be a long-term strategy, there is some evidence to suggest that the patterns of behavior that produce such effects also influence short-term market activity.