RE:@0.25I don't think it's CIBC. Looking at level 2, most of the big walls are from Pershing with some from Anonymous, RBC, and the TD troll who loves to move his order around to make L2 look worse. Another thing I noticed is if Instinet is bidding and gets in, he will flip and sell for half a cent higher.
If you watch level 2 long enough, you will get what I'm saying and you will kind of get to know their behavior and tendencies.
https://ceo.ca/n