Melbourne-based gold miner OceanaGold led the index higher, gaining 4.1 percent to $2.29. It was paced by governance software developer Diligent Board Member Services, up 3.9 percent to $4.50 and power company Contact Energy which rose 2.9 percent to $5.25.
Wellington-based accounting software developer Xero climbed 2.5 percent to $38.75. New Zealand's biggest listed company Fletcher Building rose 0.2 percent to $8.98. Auckland International Airport was unchanged at $3.55.
Telecommunications network operator Chorus gained 2.2 percent to $1.38. Today credit rating agency, Standard & Poor's said the company remains on a negative credit watch, but did not downgrade its BBB rating.
Telecom dropped 0.6 percent to $2.32. The biggest phone company is ending its decade-long bundling agreement with Sky Network Television this May, which may lead to rival telco Vodafone, which still sells Sky TV bundles, snatching some of its customers. Sky TV gained 0.2 percent to $5.75.
Investment company Guinness Peat Group, which is cash rich but tied up in an on-going stoush with the UK pension regulator, slid 0.8 percent to 66.5 cents.
Tyndall's Lindsay said the significant volume going through is indicative of continuing offshore investors buying the company's shares.
Trade Me Group, the online auction site, extended this week's decline, down 1.7 percent to $3.96. Retailers followed suit, as the country's biggest listed retailer Warehouse Group slid 0.9 percent to $3.50. Clothing chain Hallenstein Glasson slipped 0.3 percent to $3.09, as did outdoor goods retailer Kathmandu Holdings, down 0.3 percent to $3.13.
Meridian Energy, the government controlled energy company, was the day's worst performer, down 2 percent to 99 cents. Fellow partially privatised electricity provider MightyRiverPower also declined 1 percent to $1.98.