Spark New Zealand, which offers a dividend yield of 6 per cent, rose 1.8 per cent to $3.065.
Fletcher Building fell 1.2 per cent to $8.86. Auckland International Airport declined 1.6 per cent to $3.79.
Power companies have been particularly volatile ahead of the election with the sector facing increased regulation if there was a change in government.
Contact Energy declined 0.7 per cent to $5.61. Meridian Energy was unchanged at $1.40. MightyRiverPower rose 0.2 per cent to $2.445. Genesis Energy increased 1 per cent to $1.95.
Infratil was the best performer on the day, gaining 6.6 per cent to $2.65, its highest close in more than six years. The infrastructure investor sold its Australian energy operations, Lumo Energy and Direct Connect Australia, for A$605 million. After adjustments for final working capital, Infratil estimates net proceeds of between $646 million and $664 million, reflecting a gain on sale of between $343 million and $361 million. Sale costs are estimated to be $57 million, including a $44 million fee to its manager HRL Morrison & Co.
Trade Me Group declined 0.3 per cent to $3.46 after New Zealand's biggest online auction site said it bought Wellington-based online credit card payments firm Paystation for an undisclosed sum.
Kathmandu Holdings, the outdoor goods retailer, dropped 1.3 per cent to $3.10. Warehouse Group, New Zealand's largest listed retailer, rose 0.3 per cent to $3.10. The BNZ-BusinessNZ performance of services index slipped 0.5 points to 57.9 in August, where a reading above 50 indicates increased activity, however, retail trade was one of the few sectors to report a contraction at 47.4.
Outside the benchmark index, Vista Group International rose 3.5 per cent to $3. The cinema software and data analytics company was issued a 'please explain' and to confirm it complied with listing rules by NZX regulators given the stock's 62 cent gain to trade at $3.20 this morning from $2.58 on Sept. 3.
Vista director Brian Cadzow said the company complied with NZX and ASX listing rules, without offering any further explanation behind the gain in share price. It was unchanged at A$2.42 on the ASX.
Pumpkin Patch fell 2.4 per cent to 40 cents. The children swear retailer appointed Steve Mackay as chief financial officer. Mackay has previously worked as general manager of commercial for Ezibuy, the apparel and homeware catalogue retailer. The kids' clothing company is going through a strategic review to boost sales and return to profitability in an increasingly competitive market.
On the NZ Alternative Index, Wool Equities which processes wool for its grower shareholders, de-listed from the small-cap market, having suspended share trading in March. A pre-requisite for a potential merger with Primary Wool Cooperative, a farmer-owned joint venture with wool broker Elders, was for Wool Equities to quit the stock exchange.