Makes me wonder, RBC bought a block earlier at 45-46, then before noon sold at 44 and at about 3pm sold at 45.
Such block moves do not come often so I do not think it is three separate clients doing same all of a sudden. I smell one client or probably RBC itself.

So what? you say, as long as there is movement it must be good for a stock that was mostly traded in dribbles.

I suspect this could be a reaction to the possible Hydro sale and either it is positioning or more likely price bracketing so that sp does not run off on them.
They must be much closer to the rumour mill than us mere mortals of this forum.

And these romours are becoming more regular as opposed to the doldrums of the past.