"That's what's impacting technology to the downside... and in Canada, Shopify can move the market." In addition, payment processing services like Shopify charge per transaction, so steps by the central bank to tame inflation can be viewed as negative. Air Canada AC.TO shares fell 1.4% to C$23.21 after the company agreed to a $4.5 million settlement to resolve a U.S. government investigation into claims thousands of air passenger refunds were delayed.