The problem is that in fact we do not 'know' Noront is undervalued.
We do 'infer' from assays and visuals on cores that a much higher value will be determined when the smoke clears and dust settles. Until more assays and a 43-101 is presented however there are a lot of potential investors sitting on the fence saying 'prove it'.
At the moment and for some while Noront will remain 'undervalued' and that's a good thing for those buying in now as they have a good chance to double their money, or more, over time as the 'proof' is put on the table.
As news releases put the pieces of the 'proof' on the table more buyers will come in and share price will slowly rise to the moving 'value' target.