Don't think there'll be a sell off today as lots of people haven't recieved their allocations yet?
The company stated 13/03 was the allocation day "(Despatch Date / Shares entered into Shareholders security holding) " - not a particular time of that day (Pre-open for instance). They have all day to do this and I think they'll probably stagger the allocations. Also I don't think they will allow them to be tradeable till everyone has recieved them.
just my thoughts - I've been known to be wrong once :-)
GGP Price at posting:
2.2¢ Sentiment: Buy Disclosure: Held