I obviously can’t speak on behalf of institutions motives but they make money by charging people to borrow the stock which is obviously a win-win for institutions. Price goes up they own the stock when the short is covered, price goes down and the shorter holds the position longer and pays more interest on the short position.
The short seller does not sell the stock to drive the price down they sell the stock anticipating further share price drops. The loser is the lemmings (mostly retail) holders who jump into share price rises, most of the time based on no fundamentals, and are left holding the bag of overpriced stock and hence my call for caution. (In general, and not specific to NCZ)
