The official PEA was just released on May 19th so it may take a while for bigger firms to read, digest, and make a decision. Especially, if the investment company is going to buy significant shares. I assume they may have to present why NIOB is a good buy to someone in management that will green light the purchase. I have no idea if this is correct but most big companies have levels of bureaucracy you have to go through when a significant purchase is being made...