Shares in Z Energy debuted on the NZX at $3.73, a 23-cent (6.6 per cent) premium to their $3.50 issue price today.
Z Energy's co-owners Infratil and the New Zealand Superannuation Fund last week sold 60 per cent of the service station chain in what brokers said was a well-supported initial public offer, which was priced in the middle of a $3.25 to $3.75 indicative price range.
Infratil and the Super Fund will each reap $420 million from the sale.
Z Energy will be New Zealand's first listed transport fuels distribution company and will be among the top 20 New Zealand companies on the NZX.
Infratil and the NZ Superannuation Fund bought the company - which represented Shell's downstream New Zealand assets - in 2010 for $696.5 million.
Z Energy's debut will take place in a generally buoyant market which has seen the benchmark NZX-50 index gain about 25 per cent over the last year.