Thursday, 7 March 2013

GlaxoSmithKline average share price change for the 12 months of a year

This analysis is intended to be a follow on from the analysis on which months have the most increases and decreases for GlaxoSmithKline (GSK.L). This analysis is intended to look at which months see the highest average increases and decreases in share price.

The last 10 years worth of data has been gathered to calculate the average share price change for each month. The calculations have been based on the difference between the past month's closing price and the next month's closing price, for instance the closing share price for February would be subtracted from the closing share price of January. This would be done 10 times for a month, as this would be for each year analysed. After getting the change in share price for each month during the 10 years the same month's share price change would be added up for each year and divided by 10 to give the average.

Average GlaxoSmithKline share price change for a month

The chart above demonstrates that like the analysis on which months tend to see the most increases or decreases, January saw the most decreases in the 10 years and has the highest negative average change in share price. April and September saw the most increases in share price for GlaxoSmithKline, however April saw the highest average increase in share price whereas September saw the fourth highest average increase in share price.

This analysis further strengthens the conclusions gathered in the analysis to determine which months tend to see the most increases or decreases for GlaxoSmithKline. There various fundamental factors that need to be taken into consideration with this analysis though, for instance which month were dividends paid out. If there is any further analysis that you feel may be need to complement this analysis please let us know in the comment box below.

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