When I spoke with KXL yesterday, in my second phone call they strongly expressed the opinion that National Bank was their Market Maker.

Later on, they told me that they have no "official" Market Maker.

I don't know exactly what the text between the lines says, but what with Nat Bank's leading role in the last PP and their heavy trading recently, and the balance of their purchases at 4.32, perhaps we can consider them them the default non-official market maker (together with their retail trades).