With an MAA application submitted, a fair value for this stock is in the $3 - $5 range. Upon MHRA approval you're looking at $10+ at the very least, and likely much more depending on how things unfold.
I'd say we have a 99% chance of an MAA submission within the next 3 weeks and a ~97% chance of MHRA approval. Pretty good odds when talking about a 10x gain. Smart people understand this and are making their moves to accumulate large positions. Smart people also understand you can't dump a 50M buy order all in one day or the price is going to rocket... so we have what we are currently seeing which is sustained buying. The day-trading suckers happily sell their shares not realizing they are giving away their little 5%-10% swing gains for something much greater.