Intellipharmaceutics International Inc. (IPCI)

[fabius]

When you want to short a stock, the first step is to borrow that stock (from some broker who has accounts with long positions).

If those long positions are stuck into pending sell orders they cannot be borrowed, therefore making the shorting more difficult and pushing towards a more likely covering for those already out, who can be required to cover if the long shares borrowed are now out for a sell order.

then there is the naked short, which is made without borrowing...it is not legal, but I believe is vastly used in stocks like IPCI