SeanI, I think there is always someone who knows something that...

SeanI, I think there is always someone who knows something that we don't!

The susstained buying looks like someone taking a position in the company. This is enough cause for the SP to rise in the absence of any significant announcement.

Last week finished off nicely, with the SP closing close to the top of the weekly candle and nicely above the 52.5 resistance. SP looks to be heading up to test the 67.5 resistance now and we will need to watch what happens when this level is reached.
Although volume picked up a little last week, it didn't look excessive and isn't signalling a sell at this stage, in my interprtation of the chart.