RE: Was up nearly 4.50 premarket. There's a pretty good chance it will hold above $22 U.S today simply because there's 2778 call options expiring today at that price.. In fact there's 14485 call options between $20 U.S and $22 U.S expiring today..
The gapped open at $23.17 put another 3293 call options in the green and the high of $23.90 added another 934 call optins to the tally..
Call options are key here as shorts use them to hedge against price increases...