Usually there is some underlying reason for the kind of move we saw yesterday but as yet no one has even posted a rumour. Volume is still high and likely share price will close up on the day.
If the share price moves up sharply then Company management will likely be asked to comment as TSE likes to see some reason and if it's a leak will want a stop trading until news is released.
Some of the movement is no doubt due to the oversold condition but seems too high a move for that to completely explain things. The move of some other juniors is a bit surprizing as well. Must be some rumour or feeling going about.