Ann: Appendix 4C H1 Q2 2019, page-53

User @MickySea posted on this
https://hotcopper.com.au/posts/39767961/single

"S3 is for warrants, see here:
https://www.asx.com.au/documents/products/Attachment_F_-_ASX_Operating_Rules_Procedures_Amendments_due_to_MIRs_AGBs.pdf
So it's probably the likes of UBS or Citibank or whomever buying in bulk so they can "borrow" to shorters (at least that's how I understand it)."

I think he means 'lend' to shorters.
I remember there was chat in the past of ISX being a shorter's favorite.
Perhaps we may see that again, with a corresponding drop in share price.