RE:RE:RE:Why did the buybacks stopFirst off, the buyback hasn't stopped. If it had, Avigilon would have had to issue a PR to that effect.
Second, blackouts and other such rules that might prevent a buyback from continuing daily if the company was managing the process themselves typically don't apply when a company sets up an automatic repurchase plan like the one Avigilon has with Canaccord.
And yes, buyback rules allow for a buyback greater than the daily limit once per calendar week.
Canaccord is basically executing the buyback according to TSX rules and the agreement they made with Avigilon. Without knowledge of the details of the agreement, it's impossible to say why they might be buying back at some times and not at others.
You can find more info about TSX NCIB rules here::
https://tmx.complinet.com/en/display/display.html?rbid=2072&element_id=566&print=1