"The market is buoyant and led by the power companies, which is not a surprise, given the regulatory risk declined with the National party coming into power again," said Shane Solly, director at Harbour Asset Management. The return of the National government means a" a consistent framework and more of the same" giving the market certainty.
Air New Zealand, the national carrier sold down by the government in its asset sale programme, rose 1.8 percent to $1.945.
Other companies facing regulatory threat paced gains, with telecommunications network operator Chorus advanced 1.1 percent to $1.77, as it faces a protracted dispute with the Commerce Commission over the pricing of its regulated copper lines network, while casino operator SkyCity Entertainment Group, the beneficiary of a deal with the National-led government to build a convention centre in Auckland, rose 0.8 percent to $3.70.
Steel & Tube rose 3.5 percent to $2.95. Fletcher Building, New Zealand's largest listed company, advanced 2.6 percent to $9.05.
"Interestingly we're seeing the likes of Steel & Tube and Fletcher Building up as well," indicating National's win was seen as a positive for the broader market, Solly said.
Spark New Zealand, formerly Telecom Corp, rose 0.5 percent to $3.015.
Kathmandu Holdings rose 1.9 percent to $3.15, ahead of tomorrow's annual earnings announcement, where it's expected to report underlying earnings of between $62.5 million and $65.5 million, compared to $63.4 million a year earlier.
Outside the benchmark index, Synlait Milk, which twice cut its earnings forecast, rose 0.6 percent to $3.32. Today the dairy company posted earnings growth that met revised guidance and said it plans to take a 25 percent stake Sichuan New Hope Nutritional Foods Co to gain a direct interest in a Chinese infant formula brand. Profit rose 70 percent to $19.6 million in the 12 months ended July 31, from $11.5 million a year earlier, the Rakaia-based company said in a statement.
Pumpkin Patch, the childrenswear chain trying to revive falling sales in a changing retail environment, advanced 2.4 percent to 42 cents as it continues to refresh its board, with chair Jane Freeman announcing her departure. Peter Schuyt, who has been an independent non-executive director since 2012, will take over from Freeman at the start of next month, while former Warehouse Group executive Luke Bunt will join the Pumpkin Patch board.
Shares of SLI Systems rose 4.8 percent to $1.32. The Christchurch-based online search engine developer said some of its initial shareholders may be selling shares after about two-thirds of the company's issued stock came out of escrow.