I don't know whether you tooknote or not but I consider it part of my dd. There have been numerous times when we have discussed our various trading platform, which gives the best deal as well as who is using what.
For example, one of my platforms was cibc investors edge. They screwed up on the TFSA accounts. They weren't ready. I got P'd off and mentioned it on the forum. I have since transferred and use 2 others now.
But many of us got into these discussions posting what we all are using. Should take note when this occurs. If a poster says he just grabbed another 1000 shares watch the level 2 and see if you can find it. Then keep a record in a folder.
There are many on the foru who use BMO and for some 500 shares is a lot. There is some daytrading on the forum as well as some accumulation.
The daytraders can turn it down to .98 and it will move up to perhaps 1.05 for awhile and then perhaps back off. This is harmless. When you see the volume increase to large blocks of shares then take note..
There are also times when a platform is not working. Those on the forum using that platform will generally make mention.
Don