The act of a short covering their position is buying stock back...

The act of a short covering their position is buying stock back that they previously sold, having borrowed it from their owner - returning it.

There is plenty of ZIP stock - a lot, a truckload, it is liquid, more than Sydney Harbour, with SFA shorts - the danger of a short squeeze is much, much less than being struck by lightning which in itself is SFA.

If a stock goes to zero, the shorter's risk is that he will be locked in, unable to cover / buy stock to return to the owner and the owner will fair dinkum make hay, knowing that his stock is now worthless. He will be able to charge unregulated fees and interest until the stock has been cancelled in an Administration, which could take several years and he fukn will too because he can, and he can bankrupt the shorter.

Short positions are expensive -interest is charged daily - it is not a game and not for the faint hearted. It is a highly sophisticated marketplace, only used by large and well researched investors for a variety of purposes.

Almost all stocks have a core number of shares used for hedging against long / profitable positions either in the same stock or other. ZIP has almost 900 mil very liquid shares, of which almost none are shorted, which means that the shorted stcck is most likely for hedging, rather then pure shorting.or otherwise