A list of accredited warrant advisers is available for download in PDF format. The offering circular will explain the circumstances in which this payment will be made and how the payment will be calculated. If your warrant has no intrinsic value, it will expire worthless. Warrant issuers provide ASX with an undertaking to maintain markets for the life of their warrant. However there are no spread or volume requirements.
Issuers often arrange for a broker to handle the day to day running of the market in the warrant.
This broker may or may not be affiliated with the issuer. In general, stamp duty is not payable on call and put warrants traded through a broker. You should clarify the stamp duty position of a particular warrant with your broker or the warrant issuer. As a general rule, warrants are not permitted to be short sold in the market. Short selling occurs where you sell securities which you do not own at the time of the transaction.