STI Seasonality with R - "Will there be a sell in May"?

STI Seasonality with R - "Will there be a sell in May"?

Want to know the historical performance of a stock or STI? With R and SIT scripts, it takes less than a minute to get the answer.

R is a free software environment for statistical computing and graphics. It compiles and runs on a wide variety of UNIX platforms, Windows and MacOS.
Download form here: https://www.r-project.org/

SIT seasonality scripts, download here: http://www.systematicportfolio.com/tools/seasonality-tool-user-reference

After running the script (based on 24/4/20 closing) for STI seasonality, less than a minute can get the results:



Obviously April was the strongest month and August was the weakest month.

  

The return of May was negative. However after adding the impact of ex dividends, the return should be more neutral. May seemed to be relatively weaker for recent years.

Next we can even deep dive into the charts of the individual months for each year.

Historical charts of May