Most, if not all (in terms of regulatory requirements) listed companies will have a dedicated investor relations section in their website which will plot price movements over set periods. Alternatively, google finance, yahoo finance and even sharenet have this information available for free.
By the way dude. I would suggest you get some kind of share trading account/ subscription if you require such detail information.
Std Bank has one for R50pm
Fnb: R45pm
Sharenet: R50pm