The brokers would have called PDY for clarification, then if not forthcoming, they call the ASX and ask them to intervene and halt the trade.
They ask for this action to be taken if they (brokers) believe an anns provides too little info and/or may contravene trading rules and regs, to allow for them (the broker) to do their job and advise clients based on an anns.
It actually happens quite a lot with broker firms asking the ASX to investigate certain announcements for further information to be provided by the company to allow the market to make informed decisions.
Especially in the cases where the anns is extreme in nature with little substance behind it, or out of the ordinary.
PDY Price at posting:
3.3¢ Sentiment: None Disclosure: Not Held