As a newbie to warrant trading this thread has been very useful to me.In my short experience so far I share the frustration of cerhob re mm changing IV midsream.From my limited experience there appear to be certain issuers who do so often and others which are consistent and less likely to leave you being caught out. Generally I have found warrants issued by Macquarie and Citibank to be fairly consistent(i.e. you have a chance to get out at a fair price if the trade gos against you.) On the other hand Ive found ANZ and Credit Suisse to be atrocious. It would be useful to expose those who consistently change their IV and just maybe weight of demand for their warrants might force them out of the game or at least change their behaviour.
