Historically, index results in the second quarter of the year go into "hibernation", which was reflected in the latest results, Mr McClay said.
The collective growth of the index's top three companies for the quarter was $108 million, or up 0.8%.
The positive overall result was achieved due to Meridian Energy's strong quarter. Ebos Group and Ryman Healthcare, although in the top three, both suffered declines, dropping by, respectively, $113.9 million, or 4.1%, and $60 million, or 1.4%.
Mr McClay said strength in the primary sector was driven by Blue Sky Meats, New Zealand King Salmon Investments, PGG Wrightson and Synlait Milk, which was a highlight of the quarter.
Mr McClay described the index's quarterly 2.8% gain as "reasonable". It was outperformed by both the S&P/NZX 50 Capital Index and the Dow Jones, which grew by 5.1% and 3.3% respectively.
Outside the top three, the index's best performers were Synlait Milk, with its capitalisation up $138.1 million, Skyline Enterprises, up $102.1 million, Heartland Bank, up $77.7 million, and New Zealand King Salmon Investments, up $41.4 million, Mr McClay said.
After Ebos and Ryman, the next largest falls during the quarter were Dunedin-based cancer diagnostic company Pacific Edge, down by $27.8 million, Scales Corporation, down $19.8 million, and Syft Technologies, down $16.1 million.
simon.hartley@odt.co.nz