This whole Paradise Papers fallout is going to be interesting as well....
http://www.bbc.com/news/world-us-canada-41889787
nstead of paying Irish corporation tax of 12.5%, or the US rate of 35%, Apple's avoidance structure helped it reduce its tax rate on profits outside of the US to the extent that its foreign tax payments rarely amounted to more than 5% of its foreign profits, and in some years dipped below 2%.
Seems to be approx $8-35 Billion in tax avoidance per year... I wonder how that might affect the share price, if they were tagged with a $15 Bil. per year x 5 years tax penalty...