For a short they need to borrow the shares needed, so I assume they are generally borrowed from a funds that needed them for being listed on the ASX300. Now that funds are going to have to sell these shares as they can only be on the ASX and not the NASDAQ so therefore they need the shares back so shorts will have to cover. A simplistic view but that is what I'm assuming could happen.
IHL Price at posting:
7.9¢ Sentiment: Buy Disclosure: Held