rio went up because the record date was still a week away. buyers wanted IN to get the cheap placement.
AIO is most likely to dropped to a mid-point between the $1.20 and the last traded price $1.83 - so maybe about $1.50 or thereabouts.
the placements basically means that any assets sales/takeover proposal were not good enough. seems like a hostile takeover (which usually requires a healthy premium)is somewhat unlikely now.