RE: RE: National Bank Financial Inc. Here's what I found at IIROC
Part 2 – False or Misleading Appearance of Trading Activity or Artificial Price
For the purposes of subsection (2) of Rule 2.2 and without limiting the generality of that subsection, if any of the following activities are undertaken on a marketplace and create or could reasonably be expected to create a false or misleading appearance of trading activity or interest in the purchase or sale of a security or an artificial ask price, bid price or sale price, the entry of the order or the execution of the trade shall constitute a violation of subsection (2) of Rule 2.2:
(a) entering an order or orders for the purchase of a security with the knowledge that an order or orders of substantially the same size, at substantially the same time and at substantially the same price for the sale of that security, has been or will be entered by or for the same or different persons;
(b) entering an order or orders for the sale of a security with the knowledge that an order or orders of substantially the same size, at substantially the same time and at substantially the same price for the purchase of that security, has been or will be entered;
(c) making purchases of, or offers to purchase, a security at successively higher prices or in a pattern generally of successively higher prices;
(d) making sales of or offers to sell a security at successively lower prices or in a pattern generally of successively lower prices;
(e) entering an order or orders for the purchase or sale of a security to:
(i) establish a predetermined sale price, ask price or bid price,
(ii) effect a high or low closing sale price, ask price or bid price, or
(iii) maintain the sale price, ask price or bid price within a predetermined range;
https://www.iiroc.ca/industry/rulebook/Documents/UMIR0202_en.pdf