New Zealand's stocks rose 34 points, or 0.3%, to 13,809 in Tuesday morning deals, extending gains from the previous session, tracking rises on Wall Street overnight, supported by a rally in technology stocks and easing oil prices amid hopes of US-Iran peace talks.
Moderating oil prices also supported sentiment, easing inflation concerns and tempering expectations of an interest rate hike.
However, traders were cautious ahead of the release of New Zealand's unemployment data on Wednesday, with the market expecting it to edge up to 5.4% in Q2.
Traders also anticipated the release of a slew of data from the US, including jobs data for guidance on the US economic outlook.
Energy, consumer staples, healthcare, and tech sectors mainly boosted the index, with notable gains from Ebos Group (1.9%), A2 Milk (1.0%), Infratil (1.0%), Channel Infrastructure (0.9%), Fisher & Paykel Healthcare (0.8%), and Venti Services Group (0.6%).