In addition to the volume it is interesting to note that most of those trades on the buy side were done by RBC. One after another after another after another etc.
Additionally one trade was 200,000 shares.
When someone sells 200,000 shares some (or many) someones has to buy 200,000 shares; but this was 200,000 shares on one trade so obviously there was one buyer. This was in the midst of the one after ther other mentioned above.
Methinks someone is accumulating. It appeared to be just one part of an approximately $50,000 buy.
P.