The purpose of this analysis is simply to see which month's in the year typically see an increase in the share price against the previous month for GlaxoSmithKline (GSK.L).
This test has been conducted using the last 10 years worth of share price history for GSK.L. Therefore, the data has been collected from 1st January 2003 up until 31st December 2012. The calculation has been based on the closing share prices of each month, for example if January closed at a share price of 1312 and February closed at a price of 1360 then this will be considered as an increase in the share price in the month of February.
The y-axis in the chart below illustrates the number of years a particular month has seen an increase in the share price for GlaxoSmithKline.
The chart above illustrates that on average January is the worst month for GlaxoSmithKline's share price as there has only been 1 out of the last 10 years tested that January has seen an increase. The increase in January was seen in 2007. April and September tends to be the best performing months for the GlaxoSmithKline share price as both months have seen increases in 8 out of the 10 years tested.
This is merely a simple analysis of which months frequently see an increase or decrease. Therefore, other factors may need to be considered on various areas, for instance the fundamentals may need to be examined to determine why January has the highest amount of decreases in share price. Additionally if you feel that any further detail is required please let us know and we will add this to this analysis.
Comment below if you want us to analyse another area of the GlaxoSmithKline stock.