The price of Medibank Private shares is expected to jump when they start trading at 12:00pm (AEDT) today.
The listing is the world's third biggest float this year - netting the Government $5.7 billion - and the biggest in Australia since the Howard government sold off Telstra in three stages.
Around 60 per cent of the shares went to retail investors, while financial institutions got around 40 per cent.
Many analysts believe that institutions will be looking to top up their stake today, pushing the price higher immediately after the open.
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