It is a stretch to believe that the traders at TD actually dabble in juniors like Noront. They are primarily acting for retail investors like you and me. My trading is done through their online service as it's pretty reliable and cheap.

Suspect you are just seeing retail investors who have no idea what's going to come out and want to lighten up or take some profits. Trading today does seem to provide further evidence that the majority of the volume seen recently was from deep pocketed institutional investors.