RE:Bizarre price movementI agree, I don't think unique to MRC but feels like algos play (or attempt to play) retail like a fiddle, or maybe it's big-money battles. You have these runups that sometimes feel engineered to create FOMO, suck in capital, and create volume - then they probably spank you with your own shares lol (does feel that sometimes we are also the product to be scalped).
I assume $128 is a major VWAP zone so maybe something going on with shares behind the scenes. It does look like the pattern is sometimes that the spike high is a future target.