Simple, insiders and institutions, who are stronger hands, hold under 10% of the shares outstanding (Yahoo Finance Statistics). They are the group least susceptible to shorter FUD tactics (spreading fear, uncertainty and doubt through outright lies or baseless claims designed to drive the share price down). The group most susceptible to FUD, retail investors like you and me, own more than 90% of the shares outstanding. FUD works best on us. That is why the short faction has picked on Cytodyn, because it has a shareholder constituency that is easiest to manipulate with FUD.