One has spiked and the other is slowly getting higher.
(Probably a bit of an 'in' joke, possibly two. By way of explanation, both were exploratory mining co.s now moving into tech: AZK is proposing to acquire Brainchip, the 'Spiking Neuron Adaptive Processor', and IGS is proposing to acquire Winter Garden, a medical cannabis company. Thus 'spike' and 'getting higher' allude to both the subject matter of the companies and their recent share price movement. Apologies to all who agree that explaining a joke is like dissecting a frog - it's no fun to witness, and the frog dies - but I just couldn't let this one go...)
